I would like to offer a simple style suggestion and get some user feed back.
What if we moved the lower menu bar to the top, just under free code camp?
All categories > Latest Top Categories New(x) Unread(y)
Raise it to the top, under the free code camp section, and add an “Improvements” link with a pop up of the display exactly as it is now.
This will add a lot more real estate to the display. As new content is added to the ‘Improvement’ files, the link can display New(x) or just a red highlight to alert new content.
Just a thought…