Click Fraud Up 16%
http://www.bizreport.com/2008/02/click_forensics_click_fraud_up_16.html
News, Research and Information on the Growing Problem of Fraud in Online Advertising.

Despite all the changes recently in the web2.0 age, one thing that hasn't changed is the model advertisers use - pay-per-click.
Google has been successful in pay-per-click for it's sponsored listings Adwords product sucessfully and I wouldn't imagine that will change, but for your average price comparison website which is supposed to deliver much more qualified users, it appears that it may be time for them to move to a cost-per-acquisition model.
Moving to a CPA model will complement the work these sites are doing to integrate content into their offerings, they're trying to increase the quality of the visitors they send through to advertisers and so should increase the conversion rates. Running on a CPA model could then prove to be in their interests as they may drive less clicks ultimately but with greater conversion. Staying on a PPC model would mean they will lose revenue rather than gain from all their hard work to optimise the listings. With cookie tracking so easy to implement and fairly accurate, keeping a track of the sales isn't a problem and most people do this anyway.


The Sunday Washington Post for October 22, 2006 contains an interesting article about companies who employ people in the United States and overseas to click on certain pay-per-click advertisements.
"Operators of these fast-growing "pay to read" networks and similar "pay to click" rings say they provide a genuine audience for advertisers, but Internet fraud experts disagree. They say the [pay to click] networks fuel click fraud . . . which translated to a $500 million problem last year."
There had been over 134 million cases of so-called click fraud until the end of the third quarter this year, it has emerged. Click fraud makes use of the practice whereby online advertisers pay per click on their ads, by generating scores of “fake clicks” and then getting a commission from advertisers.
According to documents obtained by Uri Party Lawmaker Lee Seok-hyun as part of a national audit, Overture Korea, which handles 90 percent of Korea’s online ads market, said it was unable to collect revenues for 134 million click-throughs because they had been flagged as potential fraud.
http://www.first.org/newsroom/globalsecurity/60517.html
