AmeriNZ: Of Tweets and Twooshes:
"I really like Twitter, which puts me in one half of the universe—the other half doesn’t. Unlike other social networking sites such as MySpace, Facebook, Last.fm, etc., the way Twitter works is obvious: You have 140 characters to answer the question, “What are you doing?” Sometimes it’s called a “micro-blogging platform,” which is a bit silly, really: Twitter is whatever users want it to be. Some people use it as a sort of chat platform, others as a way to offer short, witty observations of life. Most are somewhere between the two."