U.S. Share Of Global Ad Spend Falls To Less Than A Third

The U.S. has fallen to less than a third of the worldwide ad market, but represents a critical mass of digital media, especially mobile. The eMarketer interactive guide, which enables users to select and view shares by year (through 2018),

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http://www.mediapost.com/publications/article/239861/us-share-of-global-ad-spend...