The average click-fraud rate across search-advertising industries is 13.7 percent, according to Click Forensics.

This is an interesting statistic and confirms my suspicion that the major PPCSEs are fairly good at keeping advertisers happy.

While you wait for them to ready their free click fraud detector, you can use the free click fraud service at Visitlab

Popularity: 2% [?]

Submissions made in May 2005 are still not showing, so it seems pointless to fill out a free submission to Entireweb. Of course, their paid service works fine on Entireweb itself, although its “partners” display such listings because they are metasearch engines and they would have picked up one’s submissions elsewhere anyhow.

Popularity: 1% [?]