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 Agency Collaboration More Important Than Expertise, Say Marketers In an Increasingly Fragmented Media World, There Must Be a Focus on Account Management By Kunur Patel, Published on April 14, 2010 10 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.