pcause writes "A recent study finds that 6% of Web users generate 50% of the click-throughs. Worse news for advertisers: these clickers are not representative of the population as a whole, most have incomes under $40K, and their clicks are not related to any offline buying. (They are mostly males between 25 and 44 years of age.) The number of clicks on an ad campaign is also not strongly correlated with brand awareness for the ads' subject, according to the study. This is bad news for ad-supported Web sites and businesses, as rates should drop if the Net economy begins to take these findings seriously."