if it's opt in then that's alright, but if they start including the ads with no say so from us, like they do for interest-based ads, then that's a poor deal for the publishers.

the advertisers get to advertise all their stuff without paying any money. if the click doesn't convert, they still get a free advert out of it.

the advertisers get to advertise all their stuff without paying any money. if the click doesn't convert, they still get a free advert out of it.

But won't those CPA advertisers risk lower ad rankings if their ads don't perform? With CPC ads, Google uses an algorithm that looks at both bids and clickthrough rates to determine which ads are displayed first. I'd expect the new CPA ads to work in a similar way, just to discourage "free adverts" and maximize revenues for Google and the publisher.

Wow, I was just wondering yesterday what happened to CPA ads, I must be psychic :)

I hope they get it right this time. There is a lot of potential in CPA ads, but the implementation last time was weak.

FarmBoy

I hope they get it right this time. There is a lot of potential in CPA ads, but the implementation last time was weak.

Well, you've got to give them credit for persistence. :-)

I'd guess that some publishers will benefit from CPA ads and others won't even notice their existence. (Kind of like placement-targeted CPM ads--some publishers see those all the time, and others don't, depending on the supply and performance of traditional CPC contextual ads for their topics.)