According to the latest Click Fraud Index (CFI) from Click Forensics, the average click fraud rate for the second quarter of 2006 was over 14 percent.
The average click fraud rate for keywords or key phrasess with bids of over $2 per click rose above 20 percent. Outsell estimates click fraud is a $1.3 billion problem affecting publishers, advertisers and search engines.
A quick search on Google for adsense fraud results in over 11 pages of results. The more generic term click fraud results in over 10 pages. It is probably the number one problem of Pay Per Click (PPC) Search Engine Marketing (SEM).
Recently, there are several programs set up for the stated purpose of getting clicks to your ads and you will be wise to steer away from them. It is illegal, dishonest and will get your site banned from advertising sites. You may also be sued by search engines.
Tags: click fraud, adsense, paid to click