Cesviamo.org is an Italian social network. It’s created by Cesvi, a non-profit organization. The concept of the social network is really simple: you can make a bet envolving all your friends in order to raise money for social issues.

To make students more conscious about AIDS, they’ve launched a “Condom Mob”. The purpose was to gather 100 students in a huge condom. Eventually they got 223 persons in this condom.
After the jump you can see a video of this project. Too bad the video is in Italian, but you get the point I assume.