For me, it loads for about 0.5 seconds then for some reason disappears and I'm left with a blank screen. The skin looks nice, from what I can see in the intervening period, but I would say nobody will use your website if they can't see it
EDIT: Apologies, I think it was just a browser issue I was having and your website was just the first to manifest the issue. Anyway. Color scheme is really nice, I think. You've used the CMS to better effect than almost any other vB site I've seen - although aesthetically the CMS looks a little cluttered? Could the Recent Forum Posts widget be moved from above the content to maybe below the Section Widget?
Forums look like they're all being actively used, and I really like the header area. Overall, very nice
P.S. Oh, and maybe move the Facebook Connect button into the login box? Some people might not know what vBulletin Connect is, and if they register before they realise, it's all moot