kodaks - 4:05 pm on Aug 22, 2004 (gmt 0)

The main thing you can do is just market your forum really well, so more people are inclined to post and sign up. Some great ways of marketing are:

-Submit URL to all major search engines like:
Google
Yahoo
Ask
All the Web
AOL
Hotbot
Teoma
Alta Vista
Look Smart
Lycos
MSN Search
Netscape
DMOZ
Alexa
-Start a newsletter, that targets people about your forum.
-Install a tell-a-friend form on your forum.
-Make a "Link to us" page on your forum with different banners and text links that webmasters could use on their website.
-Start a link exchange program on your site.
-Join a banner exchange.

I hope this helps, and best of luck!