Share this postTuesday September 11, 2012www.iris.reportCopy linkFacebookEmailNoteOtherDiscover more from Iris ReportChanneling signals of disruption and opportunity. With confidence. @irisreportSubscribeContinue readingSign in Tuesday September 11, 2012The EditorsSep 11, 2012Share this postTuesday September 11, 2012www.iris.reportCopy linkFacebookEmailNoteOtherSharecourtenaybird:Twitter Tops Facebook in US Mobile Advertising Revenue