![US Online Ad Spending By Channel, 2012-2018 [TABLE]](http://www.emarketer.com/images/chart_gifs/174001-175000/174313.gif "Table - US Online Ad Spending By Channel")
Strong, steady growth in mobile advertising will push digital ads to represent nearly 30% of all US ad spending this year. Advertisers will invest more than $50 billion in digital channels in 2014 for the first time, an increase of 17.7% over 2013. Just over one-third of that will come from mobile, but by 2018, mobile will account for more than 70% of digital ad spending. Read the rest at eMarketer.
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