No sorry, I mean trade points on the game back to BTC.
No, I don't think so. That would be a violation of Facebook TOS as I understand it.
This is simply another place to spend your BTC, and a pretty effective implementation he's done too. If only we could get all app developers to do it.
The developer behind this project has done well. Now we will need to reciprocate by making something that he might want to spend bitcoin on. Fostering trade relations and interdependence is very important for a successful bitcoin economy.