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 Ad Age Digital A-List: Pinterest Elegant Design, Simple Concept Has Marketers, Publishers Rushing to Jump Onboard Fan-Filled Bandwagon of Fast-Growing Social-Media Startup By Cotton Delo, Published on February 27, 2012 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. Register Now Already a member? Log in.