Businessweek this week takes into the dark pit that is online advertising. EntrepreneurMartin Fleischmann knows all too well the hell of "Click Fraud". Even with all his levels of education he still got duped. The 40-year-old entrepreneur believed the celebrated promise of Internet marketing: You pay only when prospective customers click on your ads.

From Businessweek.com:
Now, Fleischmann's faith has been shaken. Over the past three years, he has noticed a growing number of puzzling clicks coming from such places as Botswana, Mongolia, and Syria. This seemed strange, since MostChoice steers customers to insurance and mortgage brokers only in the U.S. Fleischmann, who has an economics degree from Yale University and an MBA from Wharton, has used specially designed software to discover that the MostChoice ads being clicked from distant shores had appeared not on pages of Google or Yahoo but on curious Web sites with names like insurance1472.com and insurance060.com. He smelled a swindle, and he calculates it has cost his business more than $100,000 since 2003.

Click Fraud [BW]