Some organizations pay these sites big amounts of money to advertise their services and products (In the form of Surveys). It is their business, now how they are going to make people visit these organizations' sites? Believe or not, the best way to do that is to give away presents and reward you. They get enough money for the presents and to stuff their pockets, too. It's not like they're giving you things for free, just for no reason. You're making them money, so they are repaying you in the form of gifts, or even money of your own. It's actually real, and it has actually been reported about on the new. So go back to the home page to find out how you can get "free" things too.