Esta que has colocado me a gustado1 Gracias por compartir!
I use Project Wonderful. They use a bidding system, not a click system. I get a lot more off this method then I've ever gotten off google anything. Your key to success with this site is page views. The higher it is, and the less actual biddable ads you have, the more you make.
This is how I pay the rent here at Ning.