There is a website where by completing surveys, you score points and can redeem the points for the game you want on STEAM, whenever you get the points clear. However, the surveys tend to give a few points, but if you have a prepaid card with no balance, we can use to enroll in all the campaigns to pay for the phone. As we have no balance will not have problems, we find high and low at the moment. This got a lot of points and for example in an hour you can get to get Modern Warfare 3 without problem. I recommend never used that card to carry and less to contract. Mine goes straight to a drawer at the moment and I will use it for what it later. The web is this: http://www.steampowers.net?join=28967