Wireless headsets can be a real boon to mobile-phone users, especially for chatty folks who often have their hands full. In recent years, these headsets have bolstered their noise-canceling technology, making it easier to conduct conversations even while walking on noisy city streets.

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Change is a familiar concept in the mobile-phone industry. Most recently, Apple and Google introduced mobile devices with two vital innovations: They run on fast 3G networks and use touch screens. Yesterday Research in Motion, maker of the BlackBerry, brought out a device that goes halfway: the BlackBerry Bold, which runs on AT&T’s 3G network, but doesn’t have a touch screen.

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If you’ve heard of Twitter but don’t exactly know what it is or how it works, you’re in good company. In the past two months a bunch of my friends, ranging in age from early 20s to late 30s, have asked me about Twitter–or Tweeter, as one person accidentally called it. 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.

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My grandmother, a college graduate and former reference librarian, recently walked out of an electronics store in frustration. She compared the techie conversations that were going on around her with people speaking in a different language. And she isn’t alone.

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