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 Paywalls Boost Ad Rates for Some Magazines and Newspapers, OPA Study Finds It's All About the Subscription Data (and What You Do with It) By Michael Sebastian, Published on December 11, 2013 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. Register Now Already a member? Log in.