Hm ... the red colours should be brighter for increased legibility. Also, consider darkening the box backgrounds to increase contrast. One property of white text on black background is that in many cases, it is better to have a slightly larger line height. I'd say 120%~150% should be good.
Furthermore, there is a lot of wasted spaces in the header that could be streamlined. Start by reducing the ul padding in the header to be somewhere around 10px. You could probably cut off margin completely. Same thing for the h1 element.
The comments block has that default extra padding to the left that is also wasted space. Define the padding-left as 0.
The default margin above and below h2 headers are also a real space waster so define it as something low, like 0 0 1em 0.
One thing that many web designers fail to see is that the most important aspect of a website is its content. The design is just to spice up the appearance. Therefore, the biggest priority is legibility, followed by space for the content.
Another tip is to reduce the contrast of less important stuff (such as side bars and post info) so that the main content really stands out.
Compare your site with mine and you can tell the difference:
http://www.leezh.net/
Anti-double-post Edit: Dropdown submenus could be achieved by some CSS tricks. I got that page bookmarked somewhere, but I'll dig it up later when I have time. Here you go: http://pixelspread.com/blog/289/css-drop-down-menu The exact design has to be fine tuned, but this is the basis.
Second Edit: Here is something for those who are not great in colour theory. It really helps when you have the base elements of a site following a certain scheme. For example, mine is a mono-chrome multi-tone cyan colour scheme. http://kuler.adobe.com/
Cheers
Furthermore, there is a lot of wasted spaces in the header that could be streamlined. Start by reducing the ul padding in the header to be somewhere around 10px. You could probably cut off margin completely. Same thing for the h1 element.
The comments block has that default extra padding to the left that is also wasted space. Define the padding-left as 0.
The default margin above and below h2 headers are also a real space waster so define it as something low, like 0 0 1em 0.
One thing that many web designers fail to see is that the most important aspect of a website is its content. The design is just to spice up the appearance. Therefore, the biggest priority is legibility, followed by space for the content.
Another tip is to reduce the contrast of less important stuff (such as side bars and post info) so that the main content really stands out.
Compare your site with mine and you can tell the difference:
http://www.leezh.net/
Anti-double-post Edit: Dropdown submenus could be achieved by some CSS tricks. I got that page bookmarked somewhere, but I'll dig it up later when I have time. Here you go: http://pixelspread.com/blog/289/css-drop-down-menu The exact design has to be fine tuned, but this is the basis.
Second Edit: Here is something for those who are not great in colour theory. It really helps when you have the base elements of a site following a certain scheme. For example, mine is a mono-chrome multi-tone cyan colour scheme. http://kuler.adobe.com/
Cheers