Hmm.. cool site. :)

My feedback:
1) The search field, try to shorten it to fit your sidebar. It is overlapping the text of your main-content.
2) Make the text a little bit bigger and change the line-height of the texts (this way there is some space between lines) [I actually learned this recently, I used to rely on the font's default :p ]

Thanks for the input, Laibcoms. I'll try to figure out how to implement both of your suggestions.