I'm really late in replying to this discussion, but I'm lovelyleann in Twitter.
I'm a latecomer to Twitter. I hated it, to be honest. I'd still much rather read someone's thoughtful blog post than a Twitter feed, but I'm coming around. I'm starting to like getting little updates about what librarians and teachers (and, let's face it, some fun celebs like Neil Gaiman) are doing.
I'll be talking to teachers and media specialists tonight about Personal Learning Networks, and Twitter is now definitely in my list.