Retail Top Mobile Ad Category In 2012

Record election-year spending proved a boon to virtually all media last year, including mobile. Buoyed by campaign ad dollars, government services was the fastest-growing ad category on the Millennial Media mobile ad network, up 860%. The company does not provide actual dollars, so it's difficult to assess how much was spent per category, according to a new report. But government services represented only 2% of campaigns overall on the network.