Google Adwords CPM Fraud

"Advertisers on Google affiliate sites bid on premium ad space based on the number of times visitors come to a specific page. As with clicks, the contract is for a predetermined number of impressions. Once the impressions are exhausted, the ad falls off Google’s display list, bumping up the position of an ad placed by a competitor who has paid less, unless the advertiser renews the contract. "

Funny how I talked about this yesterday. It is a more complex process to track impression fraud, has Google figured out a way to make sure I cant use a few AOL proxy IPs and bring down your Google CMP ads in a matter of days (hours)?

Full Story: Google’s move to CPM creates a new fear for marketers—impression fraud