I reported Friday afternoon at the SEW Blog on an Independent Report: Google Click Fraud Detection Practices Are "Reasonable". Bottom-line, the report stats that "click fraud detection practices that shows Google makes reasonable efforts to detect click fraud." What is also interesting is that the folks in the forums don't seem to care, well, as of yet.
There are no forum threads outside of one that I found at DigitalPoint Forums and that one doesn't have much feedback from forum members.
This 47-page report by Dr. Alexander Tuzhilin, Professor of Information Systems at NYU, has tons of clues about AdWords, that can benefits SEMs. Anyway...
Forum discussion at DigitalPoint Forums.