QUOTE
Yahoo turns ads over to a company associated with suspicious clicks, inflated bills, and "rogue" software...Yahoo recycles ads to Oemji even though several leading Internet security firms claim the site's owner also distributes software that can deceive and annoy computer users. Yahoo's own correspondence with Oemji's parent, Oemtec Ltd., confirms that the online giant knows about the controversy. Yet Yahoo continues to send ads to Oemji that advertisers and online experts allege result in dubious clicks and inflated bills...
businessweek.com