I have and have used it pretty much zilch-o. I don't really get the concept. I don't have enough friends that use it to even make it worth my time. I go on every couple weeks and there's maybe one update from the people that I have on it. But I'm sure that's because I live in a small town and everyone is used to facebook. But regardless, I still don't like it. I just don't get the whole @person1 concept...like...does the person you @'ing at get notified that you replied to their tweet? Or are they supposed to just look at their home page and see that? That's by far what I don't get....I like facebook because it just freakin' notifies me when someone says something to me. I'm not going to scrounge Twitter to see what someone said to me if that's the case (if I had enough friends that I would need to scrounge that is >.<). Anyways...I probably don't use it right anyways. Hahaha. I'll stick with facebook.