We have moderators.
As far as contests go, if you look on the main page of the forum under outreach and promotion, we've had many different types of outreach. They all help and they all work to a point, it just takes someone to say, hey I'll run one.
I know I don't personally have time to run any promotions right now, and Kimberly hasn't had time either.
So we are really at the mercy of our members to come up with some ideas and run some promotions or contests or something.