You’ve read all of your free items this month. To register, get added benefits and unlimited access to articles, Become a Member. Already a Member? Sign in. Advertising Age Article Abstract Yahoo COO Henrique de Castro Out Amid Continued Revenue Declines Former McKinsey Consultant Was Odd Fit to Lead Revenue By Michael Learmonth, Published on January 15, 2014 2 Want more Access, Content & Connections? Upgrade to Membership. We are glad you are enjoying Advertising Age. To get uninterrupted access and additional benefits, become a member today. Become a Member Already a member? Log in.