[K]rewKillaz

Since the vent server that is posted is a freebie, and only has 8 slots, I will give you some others. Keeps in mind that these are all free servers, so they all only have 8 slots. If one is full, try connecting to another one. If they are all full, then you are SOL I guess.
ALL SERVERS ARE ON PORT 3784!
Server Addresses:
pwnitup.dyndns.org
sourceftw.dyndns.org (not on 24/7)

For right now, those are the only ones I have. I will post more as I get them.