I have been looking for this sort of service for a while now. Great job! I did not see a way to log in using anything but Facebook. I would appreciate the ability to use Google OAuth as well.
One more criticism in this bad, good, bad sandwich. For christ's sake can we all just stop using Flash!!! This is the worst part of the service. Again, I understand the temptation to use Flash, but it is not very forward thinking of your team. To be brutally honest.