View Post Ad Biz | Agencies W+K Lands Weight Watchers By Erik Oster on Apr. 18, 2014 - 2:56 PM Weight Watchers, a McCann Erickson New York client for the past seven years who spends roughly $150 million on measured media annually, has switched agencies to Wieden+Kennedy, Adweek reports. According to Adweek, the move came wi ...