To clear things up, I’ve put together a basic Twitter guide that explains how to use it, Twitter lingo, privacy options, mobile applications that can be used with the service and problems that it has. Let’s get started.

Twitter limits social-networking updates to 140 characters or less. The service is surprisingly useful, but leaves room for improvement.

What is it? In short, Twitter is a free social-networking tool that keeps people connected with one another and with sources of information. Twitter users submit updates about whatever they’re currently doing, and these updates cannot exceed 140 text-based characters.

Lingo: Twitter is the name of the service. The term twittering describes the activity of updating a Twitter account. A tweet is an individual Twitter update. Twitterers are people who use the service.

Followers, not Friends: Social-networking sites like Facebook and MySpace use the term “friend” to refer to people who are connected with one another, but Twitterers can simply follow one another’s messages by finding a person’s username and selecting a “Follow” option. This alerts the person that you’re following them, and they can reciprocally choose to follow you, or not.

Why use it? While some people primarily use Twitter to post updates about their activities or comments on the news, I use the service more as a follower, allowing me to see quick snippets of news as it occurs. Most tweets are written by real people, while others, such as updates from news organizations that you’ve selected, are automatically generated. Many tweets include the addresses of Web sites with relevant articles that tell readers more on a topic.

Where is it? Twitter works on your Web browser at Twitter.com, where user updates appear in a simple list form as they are submitted. After you’ve signed up and started following other people, those people’s updates, or tweets, will appear when you log onto Twitter.com using a username and password.

Twitter also works on mobile phones, where the 140-character limit allows messages to be sent and received via SMS text messaging. Tweets can also be sent and received via email. Users with smartphones like BlackBerrys or iPhones can use one of the many popular mobile applications for accessing Twitter, which offer much richer options than simple SMS does; I’ll get into these later.

Privacy: Unlike other social-networking sites such as Facebook, Twitter isn’t focused on holding and sharing personal information about its members. Indeed, the service operates with a majority (80%, according to the company) of users opting to keep their updates public, that is, follow-able by anyone, without permission. This openness encourages people to follow one another or to see who others are already following, and then follow the same people.

However, users can opt to protect their updates, meaning they must grant permission for others to follow them. If you’d like to sign up for Twitter, but aren’t comfortable putting your first and/or last name on the site, you don’t have to; instead, just tell others your username.

Twitter Page Personalization: Each user has a Twitter page showing all of his or her updates, or tweets. (Mine is twitter.com/kabster728, and you can follow me.) This page also shows the number of people a user follows, how many people follow her and how many total updates she has posted.

Twitterers can customize their Twitter page by uploading a photo to be used as the background. The icon representing each user can also be personalized, and this is important because it appears beside that person’s tweets on Twitter.com, where followers recognize and appreciate its familiarity. Some people, including me, use pictures of themselves as their icons, while others use random shots.

Apps/Clients: Twitter works on any browser, and will also work on a mobile browser. If you have a mobile device like the BlackBerry or iPhone, you can jazz up the experience by downloading a third-party app like TwitterFon, TwitterBerry, Tweetie or Twitteriffic. Twittervision, another mobile app, plots points on maps to show where tweets originated. Desktop clients also abound, including Twhirl and TweetDeck. Twitterfeed will set your blog to automatically post content to Twitter.

@Replies, Direct Messages: Each tweet that appears in your Twitter feed can be replied to using a shortcut arrow that appears beside the tweet, and these responses to tweets are called @Replies. So if JoeSchmo tweets to say he saw the new James Bond movie and hated it, you can reply to this with a tweet of your own that says, “@JoeSchmo I still adore Daniel Craig.” These @Replies appear for everyone to see, and must start with @ plus the username of whomever you’re responding to.

Direct Messages differ from @Replies because they can be sent only between people who are following one another. These messages aren’t posted publicly. They appear on your Twitter.com page in a right-side section labeled Direct Messages and will also be sent to your mobile device if you have one registered with Twitter.

Favorites: If you read a tweet that you really like, you can save it as a favorite by selecting a small star beside the tweet, thus adding it to a Favorites section on your homepage. Anyone can see anyone else’s Favorites, regardless of whether or not they’re following one another.

Problems: Twitter’s bare-bones approach gets to the point quickly, displaying tweets in a simple, quick-read format. But the site is lacking in many areas. It used to enable searching for people on Twitter, but that capability is currently down. Now, to search for friends on Twitter, you must upload your email contacts from a Web-based mail service. The company says it plans to have people-search working again by the end of the year. Meanwhile, search.twitter.com enables keyword or location searches.

Twitter lacks the ability to sort tweets according to what the user wants. If I just want to see tweets from real people and not those that are automatically generated, I’m out of luck. Same goes if I want to keep certain friends’ tweets in a prominent place on my homepage; Twitter has no way of doing this.

Twitter users aren’t notified when someone responds to their tweet with an @Reply. I recently happened to look at @Replies on my Twitter homepage and found three from people who follow me (I don’t follow them).

If you’re adding a Web address to a tweet and the characters in the URL take up too much space, Twitter will automatically use TinyURL behind the scenes to shrink your long link into a shorter one when you post your tweet. But this works only if you have enough remaining characters in your tweet to fit the long version of your link. A built-in TinyURL converter on the page would help immensely.

Twitter says it’s working to make @Replies more effective. It also says it plans to do more with filtering and sorting, so that the Twitter interface is more useful. In the meantime, Twitter does a good job of giving people simplified news about others and the world around them. If you’re often in a rush, Twitter can be a great resource for fast information.

Edited by Walter S. Mossberg

• Email us at mossbergsolution@wsj.com. Find this and other columns and videos online free at the All Things Digital Web site: http://walt.allthingsd.com

Bet you’re thinking about Apple’s (AAPL) iPhone.

I’m actually describing a Windows Mobile device. In fact, any touch-screen Windows Mobile device made in the past couple of years can perform the aforementioned functions — as long as it’s running a new application called Kinoma Play.

This much-needed shot in the arm for Windows Mobile comes from Kinoma Inc. and for $30 can be downloaded onto a computer or directly onto a device from www.kinoma.com. It works on touch and nontouch screens alike, though touch features do add a lot of pizzazz. After installation, Kinoma Play seems to totally take over the device’s multimedia functions, hiding every trace of Windows Mobile’s clunky, antiquated, menu-driven operating system.

Kinoma Play in action, clockwise from top left: a media interface, touch-screen navigation, upload to YouTube, picture rotation, search by characters, and photo zoom.

It smoothly opens and displays all types of media, including photos, videos and music. But it’s also a fast search engine for multimedia content on the phone, on the Web or even on your computer via remote search. Kinoma Play works with services including YouTube, Audible, Flickr, iDisk, Live365, Orb and SHOUTcast. And a section called the Kinoma Guide compiles over 100,000 podcast episodes, radio stations, videos, live television and Webcam clips, panoramas and photos into easy-to-browse categories.

After almost a week with this application, I changed the way I thought about on-the-go Web browsing for media. I forgot about typical browser functions like typing a Web site’s name into a URL bar and instead did plenty of things online with my portable device without deliberately thinking about being online.

Kinoma Play is so well-designed that I wish it could entirely replace the dated Windows Mobile user interface, which still lags behind the iPhone’s. But, alas, it’s about media only. It isn’t designed to supplant, and doesn’t change or improve, any of the phone’s more common functions, like overall email and Web browsing, calendar, contacts or productivity programs.

Kinoma is working on Symbian, Linux and even iPhone versions of its application and will release one of those versions by the end of this year.

I ran into a few problems while using Kinoma Play. On three different occasions using two different devices, my touch screen froze when I tried to start the application, and the only way I could fix the problem was by completely rebooting my device. Once in a while, I experienced slow performance, though this could have been attributed to my network connection. And Kinoma Play lacks a one-step shortcut to its home screen; currently, users must press a “Back” soft key on each screen until they reach the home screen.

But the pluses of Kinoma Play outweighed these hassles, especially considering how enjoyable this application was to use. I tested Kinoma on two Palm (PALM) devices running Windows Mobile: the not-yet-released Treo Pro, which will be available here in the fall for an unlocked, unsubsidized price of $549, and the $250 (after discounts and two-year-contract rebates) Treo 800w available from Sprint (S). Both have touch screens that work best with an included stylus, though a fingernail or fingertip worked for me in most cases.

Upon installation, Kinoma Play automatically scans a device’s media and organizes it into categories under a section called My Media Files. I was especially eager to see how photos were handled, so I started out in the Pictures category.

All Kinoma screens have a set of familiar navigational tools that appear as soft keys at the bottom of the screen; they show up when the bottom section of the screen is touched and disappear when touched again. On the bottom left, a “Back” arrow takes users to the previous screen. On the bottom right, a list-like icon represents what Kinoma calls the Menu Pod. When touched, this pulls up three succinct menus — for media, settings and another action related to the program that’s open.

I opened some photos that were stored on the Palm Treo Pro and touched the center of the screen with my finger. A quick tap on the screen zooms in on each photo, and a small inset of the photo with a box representing the magnified area appears on the lower right of the screen. I dragged this tiny box around in the inset image to change where I was zooming. To zoom in on a photo slowly, I simply touched and held my finger on the screen for a longer period of time. A quick tap after either zooming method will quickly snap the image back to normal view.

I moved from one photo to the next as I do on my iPod Touch: by placing a finger on one edge of the photo and flicking left or right across the screen. Rotating was fun and easy to do when I drew a circle on the photo with my fingertip in the direction that I wanted it to rotate. The image followed whatever motion I drew. To rotate the photo 180 degrees, I drew a larger half-circle.

I selected Flickr from Kinoma Play’s list of services and signed into my Flickr account in just a few steps. My photos and those of friends were just as easy to browse as my own photos, thanks to Kinoma Play’s built-in tools. The Menu Pod icon offered a one-step way to play all photos in slide shows; music could be selected to play in the background.

With a touch on the Menu Pod icon, users can add any media to favorites or to an “on-the-go” list. This same tool also sends multimedia to others via email; I used it to send friends photos of a recent trip to California as well as a YouTube link to video footage of Sen. Joe Biden speaking.

Kinoma makes something out of every action. The Menu Pod button seems to jump into the center of the screen when summoned, and each of its three menus spins like a tiny top to get out of the way so another menu can be seen. Other screens seemed to do a mini back flip as they opened or closed. And long lists seemed to bounce when scrolling reached the top or bottom.

In the Services menu, I used Audible to listen to part of an audio book and listened to rock and country songs on Web radio stations from SHOUTcast and Live365.

I particularly liked using the Kinoma Guide, which is constantly updated with material that streams to your devices when you open it. I found a Restaurant Guys podcast in which chef Cat Cora was interviewed, and even saved it for later listening by downloading this seven-megabyte podcast to my device in one clean step. Kinoma wisely adds all downloads to a special section that’s easy to find. The last 100 things you looked at on Kinoma Play can be found in a section called History.

These days in the tech world, much attention is being paid to applications sold on Apple’s App Store for use with the iPhone or iPod Touch. But Kinoma Play is one application that is desperately needed by Windows Mobile users, and it just might remind them that they can better navigate media-related Web services — without having to buy a new mobile device.

Edited by Walter S. Mossberg

• Email us at mossbergsolution@wsj.com. Find all our columns and videos online free at the All Things Digital Web site: http://walt.allthingsd.com

This week, I took a look at just a few Web sites that make finding these videos easy, including Howcast Media Inc.’s Howcast.com, WonderHowTo.com from WonderHowTo Inc. and eHow Inc.’s eHow.com. Howcast.com, which launched in February, encourages users to make and share good-quality, entertaining videos by providing tools on its site, and has about 5,000 videos so far. WonderHowTo.com, launched in January, used a different strategy by aggregating over 110,000 videos from various sources — including Howcast, YouTube and Scripps Networks (SSP) — rather than publishing its own content. EHow, a site that started in 1999 with text-only content, contains over 100,000 instructional articles submitted by its users or eHow editors, and has a small catalog of videos.

Howcast videos can be seen in full-screen mode using a player that illustrates step-by-step text instructions beside video screens.

After testing each of these sites, I found that my favorite how-to videos had steps that were clearly labeled and numbered and the ability to fast forward to or play back specific parts in the video — tools that Howcast included in almost all of its videos. At least some of the videos on the three sites simply illustrate things you could likely figure out how to do without watching a video, such as “How to Make Green Beer.” (Add food coloring.) Howcast.com and WonderHowTo both require users to sign in, which confirms their date of birth, before looking at what they consider “mature” content.

These three free sites are advertisement-supported, and Howcast’s ads run alongside videos. WonderHowTo.com runs ads at the top and side of its own site, on which it will play certain videos. But because videos on WonderHowTo come from other sources, those other sites can show video-embedded ads according to their rules. EHow’s videos run pop-up text advertisements displaying names and links of other related (and sometimes unrelated) Web sites. But I couldn’t get the pop-up ads to stay closed.

Overall, I preferred the look of Howcast’s site and its well-organized videos. But its content paled in comparison to WonderHowTo’s 110,000 videos and even eHow’s 100,000 instructional articles. WonderHowTo.com does a nice job of gathering content from across the Web, though the inconsistencies of other sites (including advertisements, layout and video player) were a bit frustrating. EHow’s articles were useful, as were its few videos, but I couldn’t get over the site’s unyielding video pop-up ads.

Howcast.com’s content was informative with an amusing edge, including a video titled “How to Tell If Your Boyfriend’s A Psycho.” (If he calls 50 times a day, for example.) Other videos on the site are more serious, like “How to Make Sushi” by an executive sushi chef in New York City.

The founders of Howcast Media formerly worked in Google’s (GOOG) video department, including during the acquisition of YouTube. All of Howcast’s content comes from one of four sources: written and produced by Howcast in its studios; emerging filmmakers who apply and are accepted into the Howcast Directors Program to receive $50 a video and 50% of the advertising revenue generated from videos that generate over 40,000 views on the site; content partners like Popular Science; and Howcast users’ personal how-to videos.

In order to make it easier for average users to upload better-looking videos, Howcast provides an Upload and Enhance tool that simply and quickly adds professional-looking graphics and printable steps to go along with how-to videos. This formula makes videos more enjoyable to watch.

Videos made in the Howcast Studios include accompanying music, good narratives and actors who add humor to an otherwise humdrum how-to. Among its helpful features is a video player that has smart blue markers to show where facts are sprinkled throughout the video and green markers to illustrate where tips appear. For example, the fact at the end of a video for beginner guitarists called “How to Play a Basic Bar Chord” is “The late Kurt Cobain claimed he was trying to rip off the Pixies when he wrote ‘Smells Like Teen Spirit. ‘” In full-screen view, users can zoom in on any part of a video, and written-out steps and thumbnail stills of the scene appear to the right of the screen.

Howcast tries to run ads alongside videos that relate to the content. A video titled “How To Clean Your Dog’s Teeth” has an ad for PetSmart (PETM) Stores running on its page.

WonderHowTo.com was developed by a former television executive with the intention of using the site to produce its own video, like Howcast.com. Instead, WonderHowTo.com opted to tap the vast selection of how-to videos already available on the Web.

A Browse button pulls down 35 categories from which users can sort content, including Spirituality, Dating & Relationships and Fitness. In the Fashion subcategory under Beauty & Style, I found 290 videos including one on “How to Tie a Windsor Knot” and another titled “How to Turn Old Underpants Into a Bra” — neither of which I’ll be using anytime soon. Other categories include Clip of the Day, Recommendations (for users who are logged in) and Fresh, where new videos are listed. Users can grade videos to help others tell which they think are the best, and a Top Grade category compiles the top-ranked videos.

WonderHowTo’s content comes from over 700 sites, according to the company. I used the site to find a video on YouTube about how to do a front-flip, clips on VideoJug.com that provided terrific tennis tips from a coach, and a video from EasyBarTricks.com about how to stick a beer bottle to a wall without glue or gum. (Hint: You’ll need a corner and a wall you don’t mind marking up.) WonderHowTo made it easier to find these videos than by performing a general search on the Web.

I submitted a non-how-to video to this site by simply entering a URL, without logging in. I never found the video I submitted on the site; WonderHowTo explained that it screens all videos prior to posting them, so it must have found my video.

EHow.com uses its database of articles to encourage people to watch videos, when they’re relevant. This site uses calm, pastel colors to give a relaxed feeling — especially compared with WonderHowTo, where banner ads surround the page. EHow’s 26 categories include Parenting, Parties & Entertaining and Weddings. Twelve subcategories within Weddings led to 23 articles about Bridal Party Responsibilities — a popular topic was “How To Deal With a Bridezilla.” Related videos, such as “How To Get Rid of Wedding Day Jitters,” ran along the right of the page.

Videos can also be found on eHow within a marked tab at the top of the page. But unlike the articles on eHow, these videos weren’t well organized or as easily searchable. I watched one of eHow’s Featured Videos called “How to Know if Your Toe Is Broken,” but after closing a pop-up ad for UPS (UPS) during Step One of the video, another ad popped up during Step Five. Neither ad had anything to do with broken toes.

But the eHow videos were professional-looking and included quite a few tips that I didn’t know. That broken toe video was submitted by the eHow Health Editor, and a link at the top of the page led me to hundreds of other health-related articles. I found another video on “How To Remove Wallpaper,” which was posted by the Home & Garden Editor and included a list of things I would need to proceed, along with numbered steps.

It isn’t always easy to learn from the information you find online, and how-to videos can be a big help — especially when they’re well-made and easy to find using one of these sites. Howcast.com has well-presented content that was enjoyable to watch, but WonderHowTo.com offers a better variety of instructional videos.

• Email mossbergsolution@wsj.com

For a demonstration go to www.myfamily.com/demo

This week, I tested one of the many Web sites created specifically to target families: myfamily.com. Myfamily is a free site that serves as a place where invited members can upload photos, videos, news, recipes, family-tree entries and other data in a few steps. Naturally, this idea of helping families stay in touch through a Web site is one which many companies are anxious to monopolize. Sites vying for the spotlight include the likes of Famster, The Family Post and MyGreatBigFamily.com. Some of these charge monthly or annual fees and offer features like online chatting within the site or ritzy background music while the site is being viewed, neither of which are currently included in myfamily.

Myfamily’s ace in the hole is its popular relative, Ancestry.com. Both sites are owned by parent company, Generations Network Inc., which means that Ancestry’s wealth of digitally scanned data and genealogy research can be linked to myfamily.com, enriching the site. Another big plus for myfamily is that it gives users the chance to add voice recordings to photos. These can be used to narrate a slide show (called SnapGenies) or when commenting on a shared image. Voice comments are added by following on-screen instructions and calling a 1-800 number.

I enlisted help from seven of my family members to test our own myfamily.com site. With a little coaching, my 82-year-old grandfather added a digital photo and an accompanying audio comment to our site. My Mom supplied images, voice comments and text comments. And my Dad needed only a little time during a busy week to add his voice comments to photos I posted of last year’s Thanksgiving.

But myfamily.com isn’t without its flaws. The site has been around by name for 10 years; however, I tested the newest version of this site, myfamily.com 2.0, which is still in its beta, or test, stages and is definitely still working out some of its bugs.

For example, a “What’s New” list on the home page should display recent site changes yet unseen by the user, but a video that I posted didn’t show up here, nor did new comments about photos. Also, two of my relatives received error messages when first trying to access the site with my invitation. And when a friend of mine added a 96-person family tree to her own site, the tree disappeared upon her next visit. (Luckily, she found it via an emailed link from the company.)

Myfamily cleverly starts new users on a page where they can create a site, rather than first asking for a username and password, as is done by many sites. It works on Macs and PCs, and on all three major browsers, though Apple’s Safari browser has a few hiccups.

For now, myfamily.com doesn’t offer unique URLs like www.boehretfamily.com; instead, users go to myfamily.com and sign in with a username and password. The site automatically remembers you when you return, so regularly accessing it from the same computer is a cinch.

The family member who creates the site (in this case, me) is designated the administrator and can invite anyone to become a site member. Invitees are labeled as either members or guests; the former can add content to the Web site while the latter can only view and comment on the site’s contents.

Administrators can choose from four themes with different colors and patterns, and each site is laid out in the same way: members listed on the left, three advertisements, a centered photo and lists of What’s New and Upcoming Events. Myfamily will introduce themes with more variety in the next few weeks.

Simple tabs running across the top ridge of the page organize the site’s content into Photos, Videos, Discussions, SnapGenies, Trees (as in family trees), Events, Files and People. I got started by dragging and dropping batches of digital photos from my hard drive onto the site using a fast uploading tool. Photos can be listed alone or in virtual albums, which organize them a bit better. I also added videos to the site, and though these took a little longer to load, they were as easy to post as my digital photos.

Myfamily.com’s integration with voice comments is a huge plus for the site. I smiled listening to my Mom’s emotional tone in a heartfelt comment that she left with a photo of my cousin’s 21st birthday. On another photo of two relatives asleep in chairs after Thanksgiving dinner, my Dad left a voice comment in which he joked about how exciting the dinner must have been. These comments could easily have been left in text form, but by following on-screen instructions to call a number, enter a PIN and leave a message, my own family site suddenly became much more personal.

I also used the phone to create narrated slide shows called SnapGenies. I spoke into the phone to describe each photo and then skipped to the next image on my computer screen before talking about the next shot. When finished, I hung up the phone, and the result was a simple slide show that anyone in my family could play back with ease. The instructions for ending these SnapGenies could stand to be a bit clearer, but myfamily says it is working on this.

Family trees can be created on the site or uploaded from existing family-tree files. Photos, audio and video can be uploaded from your computer to the tree, and these trees are shared with family members who can also contribute to them. With an Ancestry.com subscription (annual U.S. searching cost is $13 a month), users can attach historical census, immigration and military records to their trees, as well as hints about other people. Before the end of the year, myfamily.com users will be able to upload content from a family site directly to the tree.

My sister posted a couple of items under the Discussions tab: a recipe for Skillet Tamale Pie in Recipes, and Web sites related to our next family vacation in the News section. She asked our whole family to take a look at a list of midvacation excursions to decide which ones we wanted to go on, evoking a few responses from the younger members.

In its current state, myfamily doesn’t limit the amount of data uploaded to a site, though individual file sizes are technically limited (videos can’t exceed 100 megabytes each and photos can’t exceed around 10 megabytes each). Myfamily plans to offer an ad-free subscription model at the start of 2008 that will offer more storage; the company estimates that this paid model will cost about $30 annually.

Email updates are sent to site members daily or weekly to inform them about the site’s latest developments. Improvements are on the horizon for myfamily.com, including person-to-person chatting through the site, simple photo editing and the ability to create hyperlinks in posts.

The myfamily.com name has 10 years behind it — staying power that resonates with families who worry about their tediously entered data disappearing should a Web site go belly-up. To placate old and new site members, this 2.0 version of the site needs to make sure it’s dependably usable at all times. The new version of myfamily.com is off to a good start, and family members of all ages will feel comfortable here whether browsing the site or adding content of their own.

-Edited By Walter S. Mossberg

• Email mossbergsolution@wsj.com

Tubes installs a program on the desktop (right) into which files can be dragged and shared using automatic synchronization.

This week, I tested another product in the long line of programs that uses automatic synchronization to simplify the process of sharing large files by giving you the ability to change files and privacy options at any time. It’s called Tubes (www.tubesnow.com) from Tubes Networks and it takes its name from the pneumatic vacuum-tube system commonly used in bank drive-throughs that motivated me to join my Mom on visits to the bank as a kid. Mom would pull up and a container would whoosh over through a tube to arrive beside the car window; after a quick exchange it returned with her deposit slip and a lollipop for me.

Tubes aims to work with the same sort of magic. Once installed, its desktop application stays opened on your computer as a place where “tubes” are made for sending files. Any type of file can be dragged, dropped and sent off to share with other people using these virtual tubes. As soon as you release data into a tube, a whoosh sounds (like that of the vacuum tube) and your files are encrypted and uploaded to the Tubes server.

Invited guests view your tube’s data in its full, uncompressed format. The owner of the tube always has the final say on what is shared with whom, and changes made to tubes on your hard drive are detected instantly via automatic synchronization, guaranteeing viewers will always see the latest version of the tube. Shared tubes are also accessible via the Web, saving viewers from downloading the Tubes desktop program.

Other products like Sharpcast (www.sharpcast.com) and Pando (www.pando.com) also offer ways to share large digital files; Sharpcast uses synchronization similar to that of Tubes — it all happens behind the scenes without any work on the user’s part.

Tubes is available in a free version that provides a gigabyte of storage, or in paid versions with five, 10 and 20 gigabytes of storage for $6, $11 or $21, respectively.

Most of the time, Tubes worked well for me when I installed it on two Windows machines, one running XP and one running Vista. Tubes’ smart use of an already familiar process — dragging and dropping — gives you the impression that you already know how to use it and makes sharing files seem easy. I started dragging all sorts of files into tubes that I created, naming them and labeling them with a representative icon (one of 10 offered by Tubes or one of my own images).

For all its usefulness, Tubes certainly has room for improvement. For now, there isn’t a Mac version of the program, and when friends and I tried accessing shared tubes using a Mac Web browser, the results were inconsistent and sometimes didn’t work at all. Windows Vista had its own issues. After installing Tubes on my Vista laptop, an error message labeled “invalid argument” made me feel like a member of the debate team. And I couldn’t see thumbnail images of photos in my tubes using Vista, though I could on Windows XP.

Today, Tubes is releasing an updated version of its program that aims to improve the usability and look of the product, including refining the processes of sharing tubes and looking at tubes via the Web.

Before sharing tubes, I adjusted the permissions granted to each guest by labeling them as a Reader, Author or Editor; only the Owner can invite others to view a tube. But these labels can get confusing. More than once, I granted guests the highest level of permission, which is Editor, allowing them to make changes to the files in my tube, only for the guest to be asked for his registered Tubes email and password, which an invited guest shouldn’t need.

The Tubes experience was best when the recipient of my Tubes invitations had the application installed on his or her desktop.

After installing Tubes on a computer at work, I installed it on my home PC and easily auto-synched tubes that I created at work onto my home PC — a big plus.

Tubes incorporates the Web by assigning a unique URL to every file in every tube, and every tube automatically generates its own Web site, or “tubeSite,” as it’s called. Individual URLs for each file can be found by right clicking on a file and selecting an option to copy the URL into an email or browser. I copied the URL of a shared MP3 audio file and pasted it into my browser; it played a Fountains of Wayne song with no problem. But sharing these URLs with others is only possible if the owner gives permission.

Comments about tubes can be made in the “tubeBlog” — accessible through any tube in the application or online. I created a tubeBlog for a tube with photos from one of my vacations, adding descriptions and comments to specific photos. Others, with my permission, could do the same, using the photos from the tube or just leaving comments.

A friend used Tubes to share photos with me while vacationing in Italy and Amsterdam. I added my own travel photos and an itinerary made in Microsoft Word to his tube and changed the tube’s title; these alterations synched instantly.

Even if you aren’t online, you can access tubes or make changes to them by dragging files in or taking them out; updates are made automatically the next time your computer connects to the Web.

Tubes is off to a good start, but it needs to improve its system to make permission levels more understandable for tube owners and those invited to see a shared tube. With a few improvements, Tubes could be a product that I’ll continue using on Windows computers long after this column.

Email mossbergsolution@wsj.com

Write to Katherine Boehret at katie.boehret@wsj.com