Unfortunately, I had to learn a lot about Twitter. I wrote a column slamming it and the Twitterati hated me for it. I've since learned that for some folks, its a great social networking tool- they meet potential business partners, chat about areas of mutual concern, etc. It actually is very little of the "I'm eating an apple now" stuff. People post links to articles of interest for their group, etc.
That all said, I still don't like it much.