Well i did, and after having investigate, i found that actually up there , on the web, they are several sites that started to apply such system.
For instance, .... and .... are new social networks that pay you a percentage of their ad Revenue, depending on the traffic you are able to generate on their site, and on how many referral you achieve to encompass !! Amazing right?? and believe it or not, it works as hell, and you could make a lot of cash!!
Without doubt, this new scheme of web 2.0 will revolutionize the use of the internet by its users and the way they interact with each other!! Signing in with ... and ... cost absolutely nothing, it is 100 % Free, and if you manage your account methodologically, the earning potential is endless. Don't forget, we still at the beginning of this new adventure, but it's growing extremely rapidly, so don't be the last one to catch the wave, and give it a shot now!!