Mobile advertising in the first half of 2014 in the United States accounted for 23% of revenue from all Internet advertising in the country, – says IAB in its latest report. In total, in the first six months of this year, the mobile advertising segment of the States earned $ 5.3 billion. This is 76% more than in the first half of 2013. Mobile search accounted for $2.7 billion, visual mobile advertising (mobile display, which…