I'm not a twitterer... yet. Probably because my personal Internet bandwidth is used blogging right here. But this is fascinating:

“Twitterers” send and receive short messages, called “tweets,” on Twitter’s Web site, with instant messaging software, or with mobile phones. Unlike most text messages, tweets — usually in answer to Twitter’s prompt, “What are you doing?” — are routed among networks of friends. Strangers, called “followers,” can also choose to receive the tweets of people they find interesting...

David Troy, a software developer in Maryland, has created a Web site called Twittervision that superimposes this public timeline on a Google map. Every few seconds, a tweet appears and vanishes somewhere on the globe. It is an absorbing spectacle: a global vision of the human race’s quotidian thoughts and activities, or at least of that portion of the species who twitter.

I'd guess that this sort of microblogging will tend to have a much higher noise/signal ratio than regular blogging. But, like regular blogging, the best Twitterers will get the largest following.

Here's the link to Twittervision.