This site looks very professional and very clean. The featured content and logo look great together. The only suggestion I would make is to have the top menu start with a capital letter for each, but it seems like you are going for lower case top and capital bottom.
very nice bold nav bar and logo, for the kind of site it is i think you have nailed it but as mension further up, Capitals would finish the apperance off a bit
i think there are to many post that showed in each category. 3 newest post in each category i think good enough