These guys probably did:
Beginning in July 2008, the Koobface gang aimed at Web users with invitations to watch a funny or sexy video. Those curious enough to click the link got a message to update their computer’s Flash software, which begins the download of the Koobface malware. Victims’ computers are drafted into a “botnet,” or network of infected PCs, and are sent official-looking advertisements of fake antivirus software and their Web searches are also hijacked and the clicks delivered to unscrupulous marketers. The group made money from people who bought the bogus software and from unsuspecting advertisers.