I think the Facebook connect functionality could be further improved if it was possible for you guys to remove the last step i.e. "Create Account". Most users forget to do it so it causes a lot of accounts that I have to manually approve. Alternatively the process could be more easily explained through the registration process.

How do other sites do it, so that you are logged in automatically and able to post?

It would be nice if IPB had that option on the facebook connect

Possibly the registration process could be streamlined somehow, maybe using Jquery and a sliding frame for each step?