Do You Twitter?

Suddenly I'm receiving emails telling me that people I barely know -- in one case, someone I have never met -- is following me on Twitter, a social network based on one-line messages which started only three years ago and now is right up there behind Facebook and My Space. Last month alone it nearly doubled the number of new users! Whether from your computer or your mobile, you can let people know your every move -- and mood. But that's just the beginning of what Twitter can do. It has amazing applications in medicine, news gathering, customer relations, research as The New York Times explains in Putting Twitter's World to Use . To see who's twittering, check out We Follow , a "user powered twitter directory." Nearly 3 million people are twittering news, nearly a million of them through CNN.