A list of CPC - CPM - CPA/CPL

CPC:
Cost per click - the cost or cost-equivalent paid per click-through.
Google Adsense
Yahoo Publisher Network (Beta)
Chitika
BidClix
BannerBoxes
Adbrite
AdSonar
Clicksor
Searchfeed
Revenue Pilot
Kontera
Adengage.com
CPM:
Cost per thousand impressions
Tribal Fusion
Casale Media
BurstMedia
RealTechNetwork
ValueClick Media/FastClick
Buds Ad Network
MaxOnline
24/7 Real Media
Bannerconnect
Mamma Media Solutions
Adtegrity
Ad pepper Media
Rightmedia.com
Advertising.com
Accelerator Media
AdSmart
AdAgency1
Interclick
Realcastmedia.com
CPA/CPL
Cost per Action - model in which payment is based solely on qualifying actions such as sales or registrations.
Linkshare
Commission Junction
ShareASale
WebSponsors
Advertising.com
Azoogle Ads
Maxbounty
Affiliateer