Been done. Sued (wrongly imho) out of existence. http://en.wikipedia.org/wiki/DontDateHimGirl.com http://en.wikipedia.org/wiki/DontDateHimGirl.com Lulu's inno

Been done. Sued (wrongly imho) out of existence. http://en.wikipedia.org/wiki/DontDateHimGirl.com http://en.wikipedia.org/wiki/DontDateHimGirl.com Lulu's innovations appears to 1) using Facebook identity, 2) restricting it to women-only, 3) collecting ratings rather than long-form reviews (ratings are easier to defend as protected opinion speech), 4) collecting reviews from non romantic partners, and 5) branding/positioning away from being a cheater database. Obviously there are many problems to keep a service like this high quality, but it's an interesting use of the social graph.