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 Technorati Taking a Leave of Absence From Power 150 One of Our Original Metrics Disappears; Bloglines Bites Bullet as Well By Charlie Moran, Published on October 23, 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. Register Now Already a member? Log in.