The 10 things in advertising you need to know today (WPPGY, YHOO, GOOG, GOOGL)

Good morning. Here's everything you need to know in the world of advertising today. 1. WPP's media investment arm GroupM has acquired a majority stake in London-based independent digital media agency Essence Digital, which counts brands such as Google, HP, and The Financial Times among its clients. Financial terms of the deal were not disclosed. 2. The Groupon board has voted to oust cofounder Eric Lefkofsky from the CEO role. He will be replaced by COO Rich Williams. 3. Vice is creating its o...