This would just not work. Everyone on the internet is an asshole at one time or another, even me. What if that ONE time you were an asshole and someone popular noticed and told all his friends about it, making games cost more for you. In fact, lets go back to the popular part. This may cause games to become nothing but a popularity contest, with people bribing players with Microsoft Points and hats. There's just way too many ways this could go wrong.