Before you start marketing you should really consider making a few rules that I see every where else, but not here - without these, you'll only get new people registering but they won't come back:
1. You need a VIP section for users who contribute their time making WJ better - either thru posting or being helpful, etc.. These users would get things like larger inbox, larger avatar, custom title, hidden VIP forum - As VIP, they would be expected to greet all new intro's (each intro should have at least 5 posts from members saying hi and welcome), stay active and follow the rules. Once a month, go thru the VIP and demote anyone not greeting at least a few intros a week or being good members.
2. Give some members (maybe Respected members or certain VIP) the ability to mod the chat box. The mods do a great job, but there are periods where no one is on and chaos reigns. Modding the Chatbox is a full time job - there should be several people doing it.
3. Theres nothing wrong with joking around, but sayin GTFO to new members who say hi, or just ignoring them (this happens all the time) is really rude. Mods shouldn't allow flaming and abuse anywhere on the site, unless its clear joking. I have been the subject of abusive flaming and I've even done it a tiny bit...and its been perfectly fine with staff, and it really shouldn't be.
4. We need a sun smiley like this:
See how happy it looks??? I love this smiley!