A web site traffic expert I'm not...but speaking from my own personal experience in viewing websites, I would offer the following as just something you might consider. Your milage may vary
The first time I saw your page, it was interesting to learn about the subject - but because the front page is static, I would have to hunt around the site on return visits to see if there was anything new. If the front page contained a consistant stream of news and events, perhaps that would keep me coming back to see what is new. Fresh content is also a driver for discussion topics in the forum.
There are many sites and forums on the web that discuss site traffic and marketing. I would also suggest searching for and reading for topics such as traffic building and marketing.
I think you are off to a great start - but a successful site is more then the site building - the really hard part is in the content generation and marketing.