Click Forensics: 16.2 percent of all online ad clicks derived via click fraud during the third quarter of 2007. More than 60 percent of ad traffic coming from so-called parked domains — typically used solely to funnel traffic to advertisers — was observed as being fraudulent. Advertisers are seeing their conversion rates “drop significantly” on content networks and pulling back some of their spending as a result, chief executive says. Google disputes the companys figures, saying they dont accurately represent its own statistics.”]
Source: https://www.csoonline.com/article/2122047/experts-say-issue-of-click-fraud-not-improving.html