I hope they read this (not sure if they will), but: Ads! I've a friend who gets approx $4/user/year from a non-game mobile app from ads through mobclix. I thi

I hope they read this (not sure if they will), but: Ads! I've a friend who gets approx $4/user/year from a non-game mobile app from ads through mobclix. I think it's a fair assumption that you'd get even more ad impressions on a game (as people spend more time in games), but even without that, 200k players * $4 each = a lot of money.