that's still pretty high

there are various internet scourges: viruses (why isn't that 'virii'?), spyware, scams, etc.

'click fraud' could undermine the ad-based internet. search engine watch provides a technical--even legal--background.

an analysis by internet ad consultants fraud click network finds click fraud in the ~15% range rather than the 20%-30% feared. that may be the case, but that's still high.

now, contribute to the click fraud numbers by clicking on one of the ads on this page
(btw, would democrat tactics after katrina qualify?)