[Jack12]

As far as the design goes, there's not a whole lot to talk about. Fairly standard vbulletin installation, with a few colour tweaks.

In my personal opinion, I believe you would have been better off leaving the default blue there instead of choosing the different blue that you have. It's not making the site any more unique then the last one, and the colour just doesn't seem to blend in with the rest of the page, so it's more of an eyesore than anything else.

There's nothing wrong with using the standard vbulletin theme. It's a perfectly adequate design for people who are looking to attract members purely on content. It's also a better idea to keep it if you aren't quite the best at designing or colour blending a webpage. The default theme is still better than a half effort at a custom theme, which is how this one is coming off. (not saying it is the case, as you've already stated that you're relying on content to pull members, but that is just how it may come off to some visitors).

Other than that, the forum looks fairly well structured, although I would put the offtopic or fun area at the very end, and bring the resources section up before it. I'd also put up a custom favicon.ico image. It really does alot for visitors who'll be able to indentify your site alot quicker.

Hope you take all my comments in the good light that they're intended as, and good luck with the website.