Well, YOU should join my top list. Since I merged College Sucks, traffic has tripled. I've also created new categories, so traffic will be even more productive.
Things you should know....
1) You must send at least 1 unique visitor a day.
2) You must use one of my approved links or banners.
3) Rankings are based on PRO (productivity), not IN.
4) Your site earns credit for referring other webmasters.
http://www.TheUncensored.com
BTW, I selling pay per click ads.
http://www.joestraffic.com