Looks great, lots of nice information on your forum homepage. Your category headers are a bit screwed up when the name of the category spans onto two lines. You might want to fix that by making the category name shorter or the forum blocks a little wider. The domain name for me is a bit too long. Also the fact it has a 2 in the name seems a little odd? The only other thing I would suggest is the welcome message at the top of the page. Change it and add a little about your forum, so new users know exactly what the site is about. Also it should help your search-engine rankin a little bit more
Best of luck with your site!