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.”
Kiwi Drops Again as Milk Prices Plunge
56:41 - Bloomberg’s David Ingles reports on the latest stories moving the FX market on "First Up." (Source: Bloomberg)
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