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 Roll With the Changes: NBC Rejects 30-Second Web Spots Shorter Online Videos Get Shorter Ads By Abbey Klaassen, Published on May 07, 2007 3 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.