I think the service is fun but if you never get asked questions this can get very boring, very quickly.
The part about twitter that I do not like with this service is that when this posts an answered question to your twitter it does not use any kind of tinyurl. It keeps these really long, really messy, really annoying urls. So it cuts off half the question and answer just so it has really for a super long url and I don't really like that at all.
It's a nice service though like I said but it still needs some big improvements.
It's fun especially when people ask random questions :D