Mark Zuckerberg addressed major advertisers as an ad boycott against Facebook gains momentum

· Mark Zuckerberg this week addressed a group of top-ranking executives from agency holding companies and advertisers including Anheuser-Busch InBev, Dentsu Aegis Network, and Omnicom Media Group.
· The companies are part of the client council, a small-knit group of marketing heavyweights from brands and ad agencies who work...