Revenues for the organization behind the open-source Firefox browser were up 12 percent to $75 million, with search-related royalties from Google accounting for 88 percent of the total, or $66 million. (Another $2 million or so came from other search engines). Those revenues come from Mozilla’s portion of the search advertising revenues generated by the default Google search box in the Firefox browser.
Google’s overall percentage of Mozilla’s revenues is even bigger than it was in 2006, when it accounted for 85 percent.