I would change the post dates to align center and style them a bit more. There are some padding issues as well. For example twitter text is not vertically centered on the bar.
Generally, I like it
But check this:
1. Why does the site does not open correctly in IE<br/. 2. Leather pattern is not correct (repeating white line)
3. Validation W3C . I see a couple of easy to fix bugs.
Good luck . Kris