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 Meebo Feature Allows Users to Check-in at Websites Macy's Among Early Adopters for Tool That Allows Users to See Which Sites Their Friends Have Visited By Edmund Lee, Published on November 15, 2010 1 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.