Click-fraud is the carrot - that's why these guys are doing it. Google's best layer for detecting click-fraud is tracking click-to-buy ratio, particuarlly for

Click-fraud is the carrot - that's why these guys are doing it. Google's best layer for detecting click-fraud is tracking click-to-buy ratio, particuarlly for large advertisers. This company has figured out how to make fake-clicks appear to have a good click-to-buy ratio.