interessanter Artiekl auf Wired.com, „How Click Fraud Could Swallow the Internet„.
The amount of click fraud is difficult to quantify; estimates of the proportion of fake clicks run from as low as 1 in 10 to as high as 1 in 2. In a widely cited recent study, MarketingExperiments.com, an online marketing research outfit, reported that „as much as 29.5 percent“ of the clicks in three experimental PPC campaigns on Google were fraudulent. Whatever the exact figure, click fraud has become pervasive, and Google, Yahoo!, and the other major PPC firms have found themselves caught in a game of cat and mouse with its perpetrators. Even as the search engines shore up their defenses, click scammers are becoming more sophisticated, increasingly deploying complex software to disguise the origins of clicks. For now, the search companies and many of their clients maintain that the problem on their networks is under control. But some observers, like Holcomb, believe that click fraud is „a billion-dollar mess“ that „has the potential of destroying the entire industry.“