I’ll admit I’m not a Twitter power user. But lots of people I know use it as a primary means of information exchange and discussion. To me, the conventions that guide these exchanges (retweeting, direct tweets, replies, etc.) can seem arcane and hard to follow. But via a tweet by John Hodgman, I discovered a blog called Ray’s 2.0. The guy is passionate about familiarizing his readers with the intricacies of Twitter. So if you feel like you’ve been missing out on the conversation, this would be a good place to learn how to be a part of it.