Most users know how to upload photos, but don’t want to hassle with USB cords and slow upload speeds when transferring images onto a computer or photo-sharing site. Camera docks and memory-card readers built into PCs have attempted to alleviate these transferring problems, but these so-called shortcuts still require a certain amount of dedication to the process.

In the past couple of years, a handful of companies have gone a step farther by introducing Wi-Fi enabled digital cameras, notably Nikon Inc. and Eastman Kodak Co. But this capability works only in certain cameras and even then requires users to walk through a number of steps to send the photos through a service created by the company instead of sending them to a computer or Web site.

Little Effort Needed

This week, I tested a refreshingly simple gadget that solves this problem and does what most technology products don’t: It works in existing devices and requires next to no effort. The $100 Eye-Fi Card by Eye-Fi Inc. (www.eye.fi) is a two-gigabyte SecureDigital memory card with a built-in wireless chip. It slips into any camera with an SD-card slot, and whenever the camera is turned on, looks for a familiar Wi-Fi network and uploads your photos to your Mac or PC and one of 17 photo-sharing sites. After a quick, one-time setup, the user does nothing more than turning on the digital camera.

I thought this thing was too good to be true and set out to find its flaws. But after using it with two digital cameras (one brand new and the other over three years old), three different computers (each with different operating systems) and five photo-sharing sites, I’m convinced that the Eye-Fi is a terrific little tool. It works quickly and is a no-brainer to get going. The only people who won’t like it are those who enjoy razzing their lazy friends for forgetting to share digital photos.

Minor Inconveniences

The Eye-Fi’s flaws are minor enough to dismiss. For one thing, it doesn’t work on Wi-Fi networks that use log-in pages like those in Starbucks; instead, it’s meant to work on home networks or other “open” networks. Secondly, there’s no way to know when Eye-Fi finishes transferring photos unless you check your computer. Finally, your digital camera must stay on for the duration of the wireless transfer, which slightly taxes battery power, and slower networks and/or transferring numerous higher-resolution photos will require a bit more juice. Likewise, Eye-Fi looks for Wi-Fi networks whenever the camera is on, though the company says this only uses a minimal amount of the camera’s battery power.

The Eye-Fi Card comes in a small, colorful box that reminded me of a pop-up book: Pull one side and a quick-start guide appears on the right while the left swings out a piece holding the Eye-Fi card reader and SD card. This reader is only needed for the initial setup on each computer, which only took a few minutes per system.

I tried my Eye-Fi first on a Windows XP machine, plugging the card reader and card into a USB port. The software setup walks users through clear, quick steps like testing the computer’s firewall to be sure it can work through it and asking which folder should be designated to receive wirelessly transferred images. Here, I also typed in my account information for sharing images on Kodak Gallery; later I added Shutterfly, Snapfish, Picasa and Flickr. Other online destinations included blogs like Vox and TypePad, along with social-networking giant Facebook. The last step instructed me to insert the Eye-Fi SD card into my camera to snap the first test photo of myself, making sure it was working properly.

Managing Your Photos

Transferred photos are all reflected in the Eye-Fi Manager, a Web-based, password-protected site that tells which images were uploaded to photo-sharing sites and the computer. Users can opt to only upload from the Eye-Fi to one or the other or both, but only one photo-sharing site and one Mac or PC can be selected at a time. Account information for any of the 17 sharing sites can be saved within Eye-Fi, making it a cinch to switch where you want to send photos.

Around the office, within my registered Wi-Fi network, I took photos that showed up seconds later on my computer screen. At home, I entered my password-protected network’s information one time and watched as captured photos transferred wirelessly from my camera to either my Mac or Windows Vista laptop.

Quick Transfers

On average, it took about 40 seconds to upload each image to a Web site and about 40 seconds more after that for a photo to transfer onto my hard drive. I got home from a friend’s cocktail party and set my camera on a table with its power on. Ten minutes later, I turned on my computer to check the transfer and 12 photos from the party were uploaded to my Kodak Gallery account and my iMac’s hard drive.

Images upload in JPEG formats using their original, full resolutions. Some sharing sites change the formats for photos, but this varies between sites and isn’t related to Eye-Fi.

Eye-Fi won’t do absolutely everything for you, so for certain photo-sharing sites, you’ll still need to log on to send out emails for sharing albums with friends. But double clicking on any of the images in the Eye-Fi Manager takes you directly to wherever that image lives — whether on Picasa, Flickr, or your own hard drive.

I swapped the Eye-Fi SD card from one camera, an older Konica-Minolta Dimage X50 that still works well, to a new Kodak EasyShare V1253, which ironically has built-in photo emailing capability that isn’t nearly as easy to use as Eye-Fi. The Eye-Fi didn’t miss a beat and operated the same way in both cameras.

The Eye-Fi Card is as simple as it sounds and works with most cameras that use SD cards (for a complete list of compatible cameras, see http://support.eye.fi/compatibility/). If someone you know is constantly taking pictures that are never seen again by anyone else and they use a Wi-Fi network, Eye-Fi will serve as a carefree solution that takes the aggravation out of transferring photos to share with others.

Edited By Walter S. Mossberg

• Email mossbergsolution@wsj.com

Blogs have a place in many of our everyday lives, even if we aren’t bloggers ourselves. The word blog, short for Web log, is used to describe personal Web sites that are frequently updated with entries for sharing with others. They can range from your son’s personal blog about baseball statistics to a well-read and more polished political blog that gets tens of thousands of hits each day.

A big problem with blogs is privacy. While some people — especially MySpace fans — don’t mind posting personal news, photos and videos for anyone to read, many of us hesitate to leave details about our personal lives online.

This week, we tested a new, free blogging service called Vox, www.vox.com, from Six Apart Ltd., a blogging software company. One of Vox’s best attributes is its ability to label each individual post, or entry, with a different privacy filter, so that instead of setting your blog to be entirely private or entirely public, you can pick and choose what you want to share.

Vox also excels at making it easy to add photos, audio, videos and book links to your blog without any prior expertise. It lets you incorporate content from Web sites like YouTube, Amazon and photo-sharing site Flickr in only a couple of steps. Viewing of each multimedia element can also be restricted to people you choose. Vox is supported by ads that aren’t intrusive or distracting.

We each made a blog in Vox, and updated them several times. We found the process to be quick and simple, and the results to be attractive. We liked the privacy features. But while its intentions are good, Vox has a few downsides. Its idea of making each blog post visible to different groups is useful. But everyone who views your privacy-protected entries must also be registered with Vox, a quick process, but one that will discourage many potential users.

One example of a Vox blog.

Also puzzling are Vox’s categories for labeling those who view your blog. Everyone must be labeled as friends, family or neighbors, but the filters that determine who can view your posts don’t include neighbors at all.

Vox also doesn’t do a great job of implementing many features that are standard in blog services. These features include interactive elements on a page such as drag-and-drop organizing.

We got started by signing up for Vox — a process that involved entering our email address, creating a password and URL, and entering personal information. A Design section walked us through choosing a layout and theme from numerous choices. Katie chose the Cityscape Washington, D.C., theme, which includes the Capitol and Washington Monument. Walt chose Firefly Night, which includes the moon and stars and a silhouette of a tree.

To prompt you to blog, the Vox homepage always offers a Question of the Day, or QOTD. With one click, you can optionally answer the QOTD in your own blog. When you post your answer, or enter any post, a drop-down menu lets you choose who can view it: The World (Public), Your Friends and Family, Your Friends, Your Family or Just You. If, for example, you choose to allow only your friends to see a post, other groups won’t know that they’re not seeing the friends-only post.

If you see another person’s Vox blog and would like to bookmark it so that his or her latest entries are constantly updated on a special page just for you, you can add that blogger to your neighborhood. Friends and family are automatically part of your neighborhood, but when choosing who can see your content, neighborhood isn’t an option. Vox plans to make the neighborhood concept more understandable in an updated version due out by December.

Each individual post can be made viewable by certain people to provide privacy.

We first posted some simple text entries. Then in the Compose section, we chose from five colorful icons labeled Photos, Audio, Videos, Books and Collections. Selecting each icon let us load content from our computer or from a Web site with that type of content.

In Videos Katie selected a YouTube tab, entered a search word and found a favorite scene from the TV show “Grey’s Anatomy.” She selected a thumbnail image of the scene, hit OK, and the scene loaded onto her blog moments later. No formatting or HTML code is necessary, a requirement that used to plague many blogging services.

As we became comfortable using Vox and its privacy options, we started posting lots of things: vacation photos, a country music audio file to play along with a post about two-stepping and even Amazon links to our favorite books. And unless your post or profile is public, nothing can be retrieved using the Vox search feature.

We found a few hiccups, but mostly forgot about the geeky side of blogging and enjoyed sharing our digital media. And the idea that no one else would randomly browse across our content was a comfort. But that poses another problem: Not everyone will want to register with Vox just to see your protected content. Vox hopes to offer a way to register others so that your grandmother will be able to see your family photos online just by entering a username and password.

Back on the home page of Vox, a section called VoxWatch let us quickly see any recent activity from our neighbors or ourselves. Recently posted digital photos, recent comments and recent posts from everyone in our neighborhood were grouped here.

A helpful Organize section divvies all of your content up into its proper section: Photos, Books, Audio, Videos, Posts and Comments. This section let us quickly find a comment that we wanted to reread but didn’t feel like finding on our blog, and it helped us get a better idea of everything that existed on our blog — a boon as you add more and more content. This section also displays the names of those in your Neighborhood, as well as Friends and Family.

Vox does a nice job of jazzing up the world of blogging. Its designs are attractive, but it really shines when loading media onto your posts, making your blog richer in content and more sophisticated in looks. Updates will continue to be released, improving Vox’s weaknesses, the most important of which is clarifying its group labels. Vox also plans to offer to import your content from other blogging sites, encouraging experienced users to bring their last blog along with them instead of leaving it with the old service.

Email: MossbergSolution@wsj.com