okay i updated by forum a bit i see some errors but they will be fixed soon plz critique my new style! http://diablo3community.com
There is not a whole lot to comment on as the previous poster noted. One thing though; the logo/header has a very ugly background behind when you have higher resolutions. (In my case: 1680x1050).
I have a problem with the white text going across the banner. You can't read it, and it needs to be moved. Actually, you don't need it at all. The red text doesn't quite work with the background. I'd stick with the white or choose another color.
I agree with david_t and nimhost - even at my resolution (1280x1024) the header doesn't fill up the whole screen, but instead has some blank space on each side that's a very ugly blue color. Please fix that! Other than that, the forum looks nice. I'm not a big fan of white text on dark background, but at least yours is not as upsetting on the eyes as other sites/forums.
The forum skin is lacking in many things. First things, it's really boring. Hate to break it to you, but it might be worth your time and money to get a new one. The banner itself is a fixed width, while the skin is fluid, making unneeded blue space for people with larger screens. If you get those things done it will be an awesome community!
Looks cool to me, and I would probably join. Unfortunately, I stopped playing Diablo about 7 or 8 years ago.