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 How Facebook Deals and Credits Can Crush Groupon The TKO: Facebook Has the Power to Make Any Deal Free By Jay Samit, Published on July 25, 2011 7 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. Register Now Already a member? Log in.