View Post Agencies | People Gareth Kay Leaves Goodby By Kiran Aditham on Dec. 3, 2013 - 8:20 AM After spending four-and-a-half years at Goodby, Silverstein & Partners, Gareth Kay has parted ways with the agency. Kay initially joined Goodby from the now-defunct Modernista! in summer 2009 as director of digital strategy, ...