ZmeHotter is a superb clone of facemash shown in "The Social Network" you should search for it on youtube.
the concept is that a person cmes to the site,by default he has 2 pictures of girls in front of him.if he/she wants he/she can see male pictures to.
they choose whose the hotter person and vote for him/her.
they can also contact the one they voted for via e-mail.
easy to ears but was hard to make.
here is a demo:
http://samescripts.com/Z6/

full support will be provided upon purchase.