How do those sites work that give things away for users performing certain actions? Like, for instance I run a site dedicated to a certain videogame. I'm getting a good deal of traffic but not getting very far with Adsense. A competitor has something set up on his site where he gives away a free copy of the game each month, and users enter the drawing for the free game by completing a survey, or some kind of trial or something. I've looked high and low for something like this. For instance I get $15 through CJ when someone signs up for a gamefly trial by clicking through a link on my site. However there's no way to track who exactly has signed up (so I can't enter them in the drawing). So how can I set this kind of thing up with getting users to take surveys or sign up for trials in exchange for entries into my drawing?
An easy way is to signup at a CPA network such as Adscend Media or even CPALead when it comes to finding the right survey/trial offer that you would like to promote. You would then either need to create a simple postback script so that you know who has completed the necessary requirement to enter the contest. There are also free and paid scripts easily available to download to make things simpler.