Thursday Wake-Up Call: Uber's New COO Plans Marketing Cuts, Rolling Stone Is Sold

Welcome to Ad Age's Wake-Up Call, our daily roundup of advertising, marketing, media and digital-related news. What people are talking about today: Uber looks set to slash its marketing budget, thanks to brand new Chief Operating Officer Barney Harford. He tells the Financial Times he will "bring a dose of financial discipline" to the unprofitable company and points to "marketing costs and ride efficiency" as potential areas for improvement.