[Fred says: If you've surfted to web sites that seem to be only Google links, or clicked on a link that took you somewhere you didn't want to go, then welcome to the club. Google's reach has grown to astronomical proportions. With their recent 3.1 billion purchase of DoubleClick they are poised to be one of the biggest players in the internet advertising business. But not all is well in paradise... ]
I am a painful critic for Google's AdSense program, as it pertains to Content (not Search). My beef is that it doesn't take into account any understanding of the target audience of a publisher, nor does it take into account Context or Intent.
As a result, it pushes out-of-context Ads, which have little chance of being clicked upon, and attempts to monetize on a CPC model.