- The overall industry average click fraud rate was 16.2 percent for 3Q07 - an increase from 13.8 percent for the same quarter in 2006 and from 15.8 percent in the second quarter of 2007.
- The average click fraud rate of PPC advertisements appearing on search engine content networks, including Google AdSense and the Yahoo Publisher Network, as well as many smaller ones, was 28.1 percent in Q3.
- That's up from 25.6 percent in the second quarter and 21.9 percent for the first quarter.
- That's also up from 19.2 percent in the 4Q06.
- Over 60 percent of traffic from parked domains and made-for-ad sites was click fraud.
- The greatest percentage of click fraud originating from countries outside North America came from France (4.2 percent) China (4.1 percent) and Germany (3.7 percent).
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