europeforvisitors - 1:54 pm on Jul 3, 2006 (gmt 0)

I think it's safe to assume that, if Google offers CPA as an option, it will take steps to minimize fraud. Why? Because Google collects a share of the publisher's revenue, and if the publisher gets stiffed, Google will get stiffed, too.

As for click fraud in the CPC model, it's like shoplifting and employee pilferage in the brick-and-mortar retail world: Some theft will always occur, but the business model won't be threatened just because a small percentage of people steal and don't get caught.

Bottom line: As long as advertisers and publishers are satisfied with their ROI from AdSense, fraud is an annoyance, not a dealbreaker.