2011/01/18 17:44:58
Cost Per Action (CPA)
Cost Per Action (engl. payment for action) or CPA (it is sometimes mentioned, how Pay Per Action or PPA) is price model of online advertizing in which the advertiser pays for a certain action (purchase, watching the video, etc.) connected with its advertisement.
Advertisers consider CPA an optimal method of purchase of online advertizing. The advertiser pays for advertizing, only when desirable action happened.