Facebook friends not real friends: judge
smh.com.au
smh.com.au
That, too, is why I tend to agree with all the 'FACEBOOK IS DOOMED!!!' articles too. Facebook, while being a pretty good web OS and development platform, lacks a decent social networking application. (Facebook itself, after a while, begins to seem very superficial and useless.)
Anyway, that's pretty much what I meant with my Emacs-ish response. It's a powerful platform, but people haven't really figured out what to do with it beyond small games and hundreds of friend invites.
Good luck with your app - I'd love to see it when/if you release it.