I think rather than having random celebrities, make this controversial and incorporate your facebook friends to the mix. From there you could develop some interesting social conversations and kick start something viral. There is no social value to just assigning random sexual variables to random celebrities, it is not something I particuarly would want to know about from a friend, or something I would take my time out to share. Break the taboo, include your friendbase and offer something a little more interesting!
Wow, so let me guess you just went out to see 'The Social Network' last night and you basically think he should turn his site completely into facemash....
No, all i'm saying is that he can integrate this with Facebook's api and allow people's members do the ratings. Haven't seen The Social Network yet, any good?