Google blames click fraud consultants for click fraud
Interesting article on the AdWords blog: Troubling findings on how some third parties detect click fraud.
With the somewhat exaggerated title of "troubling" findings, it seems to argue that the way click fraud consultants are estimating clicks is a large part of the problem, and that click fraud numbers are highly over counted, because of the methods they use. After reading this, and the third party paper that was written in response to the lawsuit Google recently settled, it seems both sides are to blame here. I don't think click fraud is as wide spread as some say, but it is definitely more of an issue then Google indicates, and I believe there is still more they can do. The easiest way for us to know the real numbers is for Google to release more of their data, which of course they will not do.