Comments:

Anyone who takes the position that advertisers don’t object to click fraud to the extent widely reported is dangerously mistaken. Click fraud and banner fraud have wreaked havoc on the entirety of internet advertising, not simply Google et al. 2005 was a horrific year for most, as various fraud tactics SIGNIFICANTLY AND CATASTROPHICALLY dilluted impression inventories and destroyed much of our ability to gauge ad effectiveness and campaign ROI.

I’m not being hyperbolic here; it’s an ongoing and increasingly acute crisis.