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 Online CPM Prices Take Tumble Many Pin Blame on Web's History of a 'Spray-and-Pray' Medium By Abbey Klaassen, Published on January 26, 2009 8 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.