I am in no way a programmer so if this idea sounds or is impossible just chill out.
I was talking to a buddy about possible applications we would like to see. One that I thought of was the use if our PIN numbers to connect to our friends and play multi player games. Like brick breaker or tetris or bubble breaker or even tix tax toe.
Im sure anything is possible with the right programmer. Maybe a game center application that shows who is playing what games, and you can just join in!