12.
Prettiest Profile Contest. Pretty much, you decorate your profile to something that is really spiffy looking and sign up. Then come voting process, you vote (required if you joined the contest) for people who's profiles appeal to you the most, or look the best in general and at the end the winner of both the supporters side and non-supporters side will get an emblem.
If you'd like, I can link you to the last PPC for an example.