Related, could someone shed some light for my dilemma:
If you're making a freemium (upgrade using in-app) mobile app that, every time you spend $5 in FB, you consistently get ~100 new users, but none of them ever upgrade (let say you're targeting people who apparently can't afford to pay), what would you do?
It's like a "good problem to have" (predictable user acquisition), but it's still a problem (no money coming).