Suggest ways to improve my site

Nice site. The only minor improvement I would suggest is to remove the margin on…
#header img
…in your stylesheet. That eliminates the unnecessary extra space between your site description and your nav menu.

Very neat layout and easy to navigate. If I really needs to be picky, I just have one suggestion: if there’s no advertisement at the moment, just put something else instead of “Advertise here”. Those grey blanks are eye sore to your nice website.