WPP's Sorrell: Twitter Is Still an Unproven Medium

Nov. 7 (Bloomberg) -- Sir Martin Sorrell, CEO & founder at WPP, explains how WPP works Twitter into its advertising plans for companies and examines Twitter’s ad growth potential. He speaks on Bloomberg Television’s “Bloomberg Surveillance.”

Economists on the Future of Globalization
48:32 - Is the sun setting on the modern era of globalization? Economists Branko Milanovic, Alan Krueger and Karthik Sankaran discuss at the Bloomberg Markets Most Influential summit in New York. (Source: Bloomberg)
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