I need you!

Ok you guys. I am asking for your help. I am holding a contest for a way to get more people to the site. Now you must not break any other site's rules or you will be immediately disqualified. The prize for this contest is a week of a +rank here on The Line Zone. Now if you come to me with the idea and prove to me that it will work then you might win the contest. The person with the best idea wins.