xmb

I'm sure quite a few of these dump sites use custom scripts, but anyone know of any scripts that will do this?

hotbadgirls.net/submit.php
tehvids.com/users/rules.html

Basic idea is that webmasters trade traffic on these plugs, and it works on a credit system - sending 100 uniques to a site will allow you to post a link on that site to a plug of your own and receive a % of traffic back that you sent them

Any ideas of what scripts these are and how I can get a similar one?
Thanks