It worked great for Minecraft: many ideas from the mod community were siphoned back into the main game. The iPhone does make this difficult, as a release usual

It worked great for Minecraft: many ideas from the mod community were siphoned back into the main game. The iPhone does make this difficult, as a release usually takes one week to go through Apple's approval system. Therefore you can't make mistake today and fix it tomorrow. This is what the Android market is good for. However the stores are different, so lessons learned on the Market may not suit your iPhone audience.