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 Will Americans Embrace Cute Messaging Stickers? Big-Time, Says Hot Japanese App The App, Line, Is Quickly Spreading Internationally, and More Than 10 Million People Already Use It In the U.S. By Angela Doland, Published on June 03, 2014 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.