Thanks, that's the stuff I was searching for. Facebook ain't that common here in germany and I'm no webdeveloper, so I didn't know until now about this API. I only had found the Facebook website which completely failed to impress me and if the name wouldn't drop so often I would probably not even have taken a second look.
Well, time for new API's... maybe next year. If facebook is still the hype in 2008 ;-)
It has some interesting possibilities, but as a hypothetical Google or Facebook developer, I'd much rather be hacking on something like Android than the Facebook API.