FourDegreez - 3:08 pm on Mar 21, 2007 (gmt 0)

The reason CPA won't replace CPC is simply because most publishers won't go for it. It's work to hand-select ads and hand-place them on the right pages, and for what? The CPA model is tilted in the advertiser's favor, so there's really no reward for the additional work required of the publisher.