Great site. Hope it grows as large as Gamedev.net one day.
One small thing I've noticed so far is that the small icon displayed next to the URL does not have the proper transparancy. It looks fine in the URL bar, but making a bookmark which displays the icon, such as Firefox's bookmark toolbar, displayes the icon on a white background. It relly looks odd next to all the other icons with proper transparancy.
I hate to be nit-picky, and it may have been intentional, but I thought I'd at least bring it to your attention.
PS - I did take a closer look at it and its anti-aliased so fixing it is a bit more than a dye-job, but its simple to fix it and still have it look like a circle.
Keep up the good work with the site.