Somewhat intrigued by a brief mention in November's issue of Wired, I took a look at Twitter, a site where you can keep your Twitter friends up to date on whatever it is you're doing or thinking. Hmm... is this really necessary? For one thing, do your friends really care enough to have to know what you're doing all the time? And I think it takes a certain level of ego to assume that people do care that much. Hmmm...