You should add a footer section to you design.
Increase the paragraphs line height.
Black color is not good for your design on the footer.
You need to add more features like twitter and flickr widget.
Give a shadow to images on the middle section side like slider.
You can try to replace the search module place to the left sidebar. Also try to select a serif font for post headings.
Some elements do not have enough more line height.