Los Angeles-based Rubicon Project said today that it has passed Google in the latest, comScore Media Metrix monthly ranking of Ad Focus properties. Rubicon reports that the the July 2012 comScore ranking found that Rubicon Project now reaches 96.2% of the U.S. Internet audience, or more than 212 million visitors, which surpasses Google's Ad Network reach by more than 6 million visitors. Rubicon's advertising network and tools are used by web publishers to optimize the return on their online advertising, by automatically steering ad space to the best ad network for their site.