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 U.S. Online-Ad Revenue Dropped 5% in First Half Search, Video Doing Well; Classifieds, Directories Are Down, According to IAB and PwC Report By Abbey Klaassen, Published on October 05, 2009 9 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.