I use tinytwitter...looking for a better app thoug. I use it to inform others especially coworkers of where I am and what I am doing (I travel Alot for work)
I have a few friends, mostly celebs and some companies. Ubertwitter is deffinately the way to go, cant wait for the new one to come out. Letting off steam is good too
I follow friends (for the obvious) and celebs (because it's funny to read their thoughts). I don't mind if people don't follow me, after all do you really care if strangers don't care to read your thoughts?