A discussion over at WebmasterWorld suggests Google may be dropping AdSense accounts from sites that buy traffic from AdWords.
Funny how this may have been the way to stop arbitrage way back before all the other methods were used and the experimentation cost regular advertisers lots of money through all the minimum bid increases.
Twitter Canada MD Kirstine Stewart to Keynote Toronto
ClickZ Live Toronto (May 14-16) is a new event addressing the rapidly changing landscape that digital marketers face. The agenda focuses on customer engagement and attaining maximum ROI through online marketing efforts across paid, owned & earned media. Register now and save!