VadPay > http://vadpay.com/index.html
CreditBurner > http://fininfo.org/index.php
PopUpTraffic > http://www.popuptraffic.com
BidVertiser > http://www.bidvertiser.com
BlackLabelAds > http://www.blacklabelads.com/mb/how-publishers-splash.php
FriendlyDuck > http://www.friendlyduck.com/AF_TA/publicarea/misc/miscLogin.cfm
Warez users aren't a good PPC market.
I think the best way to profit of the huge traffic warez brings would actually to create a legal site with Adsense or something alike and advertise it trought your warez site.
http://www.adbrite.com/mb/how-publishers-ad-formats.php?section=inline
I think if members start a warez site only to make money; the site is preset to fail. I suggest going along a different route for money...like a job?