I agree with BrotherBear.
The grey colour makes it look a bit flat as well. Also, the site is basically just a forum with very little other content. If you take a look at the the site below, you'll see much more content plus it looks a bit more "lively".
Essentially your site is a "fansite" so potential members would want quite a bit more than the site currently offers.
Other example:
LewisHamilton.Org.Uk
Hope that helps
