http://www.theregister.co.uk/2005/02...rket_estimate/
$1.6B that's a lot of coin. Probably nothing compared to the clean up cost.Adware infections net the purveyors of slimeware software around $3 a year for each infected PC, according to estimates from anti-spyware firm Webroot Software. Using this figure and stats from its own malware auditing services, Webroot guesstimates the illicit advertising market underpinned by adware infection of home and business PCs could be worth up to $1.6bn a year.