I think it definitely needs a better header. Can't see the point in the long banner on the right, which just links to the homepage (something the header image already does)? Also the box at the bottom of the posts (th quick reply post?), is a different width to the actual posts, maybe you want to make these the same width.
Thanks for your all opinions . Mgrohan you said that it needs a better header, can you make some concept of better header? I don't want to use your header I like the current header, but I am very curious what you mean by better header . Gatorade said a larger logo.. why larger? And the background color, I can give it a try, but I think that white color is classic or not? I know that my design is a little bit simple, but that's the goal.. did you see answers.google.com or webmasterworld.com? It's plain too..
If your happy with the site leave it . Maybe don't ask for criticism in the review forum, as most people give constructive feedback