Well you know what I think of your site. I'm in love with it.
I envy it quite a lot.
The ONLY thing I would suggest... is maybe making your "sponsor boxes" you have above your link list sections... IE:
http://www.collegesucks.com/directory/?categoryid=15
"SPONSOR
Free Porn DVD - Just Pay Shipping"
Make it a different color. Like a LIGHT red or very toned down yellow. It's easy to miss.
Unless you did it that way for a reason, then I will STFU.