A new page on Facebook for the updates of selective best apps and games on App Store and Google Play. Seems it would be a helpful media for all to get the updates. Do You not Like this? Apps and Games
When you say you have found this Facebook page don't you mean you have made this Facebook page as it seems to manly promote your app?
nothing wrong in doing that. I say use every tactic you can to get seen. But i guess posting it in the developers section its going to get figured out. if you had more games it would look more legit.
I personally think Facebook will be very important in ios marketing. Don't get discouraged, keep the faith and keep going, good luck.