UrTurn
May 22, 2008 | By floyd
urTurn offers rewards to users based on their interactions and connections with friends on social networks. The more content you generate, the more connections you make, the more urPoints you earn. urPoints have cash value and can be redeemed for prizes like iPhones or sold for cash on the urTurn marketplace.
I don't know to much about this one but it looks good,apparently you can generate points for people you invite among other tasks and you can redeem these points in the urturn store and it looks like you can redeem them for money also,check it out.
