Hehe...Not to put you on the spot or anything.

I've just noticed recently there have been many discussions of members asking how to increase their community size. So I'd thought of posting on their behalf.

Advertising on MySpace is a good strategy for an open community forum. Maybe you can post a new thread in the Tips forum.
For mine I pruned more than 2/3 of posts and tons of forums. I've also removed registries. For a gaming clan, however, I think having 2,429 registries (after pruning) is not bad; we've been up since 2000 (forum up since ending of 2001). Most of our registries were from word of mouth.