WSJ is doing a decent job covering click fraud issues recently. There was an
article [startupjournal.com] posted June 10 in the WSJ small business edition, which focused heavily on the available PPC audit / click-fraud detection services. Worth a quick read.
If the URL drop to the WSJ is not okay, please remove. It won't hurt my feelings. I'm familiar with the TOS, but WSJ is a pretty credible resource.
