First, if you don't have ideas and enough material for at least fifty articles on the subtopics which make up a forum, don't start a forum -- or a content-driven site. A forum is more like a magazine than a technology installation. A successful install of invision or PHPbb is no more important than choosing which ink and paper weight to use in a magazine.
Survival depends on content strategy. ...not a drive-by post in a few other forums. Try the
Forums and Content thread.
Taking a page from magazines ...Create a
Statement of Editorial Purpose. This is a basic reason for existence, what the market is lacking, the direction you might like article submissions to take, the kind of visitor you want to target.
Interesting content producers isn't as simple as turning on a spigot. Here's an idea, let's come up with some articles on those topics ...then post them here (a high-traffic forum where they'll
actually get read) instead.