Clients spent $90 million on Snapchat in 2016 and it's a threat to Facebook: WPP's Sorrell
The WPP boss said that Snapchat could become a threat to Facebook in the ad market. "It does become a threatening alternative to Facebook and I think that's the big opportunity for them. We know Facebook have tried to buy Snapchat a couple of times, we know that they've made product changes as a result of Snapchat's products," Sorrell told CNBC. "I...