Twitter's Growth Rate

Twitter is becoming the next big thing, at least with those I closely interact with, and while I can't speak for its long-term success, it sure is making in dent in social interaction right now. I used to say that I didn't see the point and it was a waste of time, but once you get a few people you know on your list, it becomes a lot more useable. If you're on Twitter, I highly recommend following Guy Kawasaki (read about him here) as he is one of the top tweeters out there and amidst all of his postings, you'll find quite a few interesting links and articles. Who do you follow that you recommend?

Growth rate article