To be honest, the only mobile application distribution site which will likely matter in a year will be the iPhone AppStore. Its likely to go live this month. Google has mentioned they will come out with their own app distribution site for Android but it is unclear when this will be or how much impact it will have.
The iPhone is going global and with the carrier subsidies, it will be cheap. My suggestion is to focus your efforts there.
The iPhone is going global and with the carrier subsidies, it will be cheap. My suggestion is to focus your efforts there.