PrizeRebel is a site where you complete advertisement offers and surveys to earn points. You use these points to get different prizes, typically video games and accessories.
1 point = 1 $
This isn't scam believe me. Me and lots of my friends got ourselfs games from Steam and League of Legends game cards only for completing surveys. Besides Steam and game cards you are also able to buy stuff from Amazon and eBay.
Sign up and good luck ;)