‘Clicklab, a leader in the emerging field of click fraud detection and prevention, announced the release and general availability of the white paper “How to Defend Your Website Against Click Fraud.”
http://www.clicklab.com/white-paper
The white paper is released shortly after Google has filed first-of-a-kind click fraud lawsuit against AdSense publisher. The lawsuit filed in a California Superior Court, alleges that a Texas-based website publisher generated fake clicks on its AdSense ads and paid a number of individuals to do the same.
Earlier this year, a California programmer was indicted for allegedly attempting to extort $100,000 from Google to prevent him from releasing Google Clique, the software he wrote to generate fake clicks on AdSense ads.’
Read more at Clicklab Releases White Paper on Click Fraud as Google Files First Click Fraud Lawsuit against AdSense Publisher
I am doing pay-per-click advertising for quite a long time. I am definitely sure that at least 30% of all the clicks i get on my website is fraudulent clicks. Google can in the end find out who is doing fake clicks, however they will never be able to get rid of all the fake clicks.