Click Fraud: Defined
According to Wikipedia "Click fraud is a type of Internet crime that occurs in pay per click online advertising when a person, automated script, or computer program imitates a legitimate user of a web browser clicking on an ad, for the purpose of generating a charge per click without having actual interest in the target of the ad's link"
Click Fraud is estimated to range from 5% - 15% of pay-per-click traffic (some estimates are as high as 20% - 35%) although Google estimates click fraud at only 2% due to the rigorous detection methods they claim are in place.
In a recent study by Click Forensics, click fraud reached a new high of 14.2% in the last quarter of 2006 with the average rate of click fraud on 'content networks' as high as 19.2% for the same quarter.
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