I assume that you’re going for the minimalist look and all, but I thought the headings needed something to make them seem more important to the eye. The stuff in the sidebar just looks like one big clump of text and was hard to read because it was all kinda the same tone, and the post titles in the content area just seem like they’re floating around in there.
I like your header, though 🙂
Lucky you found thematic theme, which lends a huge hand to you for your minimalist style. i think it would be nice if the post titles were not completely black, maybe a dark gray.
