GroupM’s Rob Norman: Advertisers still have doubts on Facebook

by Brian Morrissey
Subscribe: iTunes | RSS Facebook is a once-in-a-generation company, boasting a global user base of 1 billion users a day and an advertising business that raked in $3.8 billion last year. But the questions that dogged Facebook from advertisers remain in many ways, according to Rob Norman, chief digital officer at GroupM, the world’s largest media buying agency.Read the full article