Mark Zuckerberg, chief executive officer and founder of Facebook Inc., speaks during an event at the company’s headquarters in Menlo Park, California, U.S. (Photographer: David Paul Morris/Bloomberg)

Facebook's Ad Business Seen Powering Through News Feed Change

(Bloomberg) -- Facebook Inc.’s decision to shift people’s news feeds back toward posts from friends and family and away from businesses and media outlets will likely mean users spend less time on t...