View Post Ad Biz Monday Morning Stir By Kiran Aditham on Apr. 29, 2013 - 9:47 AM -Julie Atherton, who recently served at WPP as worldwide digital director on Team Colgate, has joined up with SapientNitro to serve as VP of strategy for the New York office. -ZenithOptimedia has slightly downgraded its 2013 globa ...