The grey gradient drastically reduces contrast (grey text! grey buttons! black logo!) while making the whole thing feel "muddy." The antialiasing on the big logo is whacked out, & makes me feel like I've got an astigmatism. Similar is true of the small logo at the top left: the grey/red contrast is of the type that causes a visual distortion similar to motion/line blurring.
Reflections are so 2007.
The body text is too small.
Links aren't underlined.
None of the blog items or updates are actually links. Neither is the feed icon. Neither are the Featured App, Github, or Chat blocks.
What's up with that?