Forecast: U.S. Mobile Ad Spend Will More Than Double By 2021 by Gavin O’Malley, Staff Writer @mp_gavin, March 8, 2017 This post was previously published in an earlier edition of Moblog. By 2021, U.S. annual mobile ad spending will reach $72 billion, according to a forecast from BIA/Kelsey. That’s up from $33 billion last year, … Continue reading Forecast: U.S. Mobile Ad Spend Will More Than Double By 2021 →