[Princeton]

Header looks good - it says a lot.
However, I would remove the text from it. (It's hard to read.)
You are better off using a text-based tag-line ... it will help with search engines.

Icons look nice ... however, you should have someone do a complete icon job for you.
The default vb icons clashes with your style.

The "Who's Online" icon is a great idea.
I may use something like this myself.

Change color of forum titles. Right now, it's a shade darker than it's descriptions.
It should stand out.