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 Mastering 'Stock and Flow' Will Boost Your Content Strategy A Simple Metaphor For How Media and Brands Can Better Engage Audiences By Noah Brier, Published on November 14, 2011 3 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.