You seem quite confident that the 140-character limit is an auxiliary novelty, whereas I think it's rather central to Twitter's success. There are any number o

You seem quite confident that the 140-character limit is an auxiliary novelty, whereas I think it's rather central to Twitter's success. There are any number of other similar services (LiveJournal, Wordpress, Blogger, Posterous, Tumblr) that do not enforce any such limit, yet everybody's all over Twitter. And which metrics show that limiting updates to 140 characters is bad behavior? URL shortening sucks, for sure, but that doesn't mean the limit on prose isn't useful or attractive to users.