FlashThru is like StumbleUpon/Pandora for Flash Games. You initially quickly input on the site what types of games you like, and then it finds you similar ones you haven't played before.
Every time a new game is requested, the backend's learning algorithm figures out what type of game you're most likely to enjoy. This is based on your like/dislike input-a mix of StumbleUpon and Pandora just for Flash games.
Users so far are averaging 10 views/visit, more than 3x Flash site industry standard.