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 Facebook Changes Combine the 'Who' and 'Where' More Than Ever Before While Groupon Makes Its Millions, Facebook Is Putting Revenue on the Back Burner By Michael Lazerow, Published on November 04, 2010 4 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.