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 New Groupon CEO? Andrew Mason Maintains He's the Man for the Job Struggling Deals Service Weighs Whether to Replace Its CEO By John McDermott, Published on November 28, 2012 0 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.