Actually that gives me an interesting idea, similar to Cataverie's "Create This" thread. Once or twice a week, someone posts a map they've made. Then we have a contest to see who can make the best dungeon out of it.
I'm thinking that Cat's "Create This" project and something like this could be a good part of increasing interest when we get our site. If we have various contests, it might give people more incentive to post and participate.