Another personal obsession:Here’s Where The World’s Largest Media Buyer Spends Its Money

WPP's GroupM spends $76 billion a year on media. All but one of the top recipients of that investment are digital media companies.

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from Marketing Land - Internet Marketing News, Strategies & Tips http://marketingland.com/heres-where-the-worlds-largest-media-buyer-spends-its-money-140596
via Mister Fire