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 Why Digital Agencies Aren't Ready to Lead They Lack the Balance of Exploration and Exploitation By Ana Andjelic, Published on November 03, 2009 95 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.