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 As Part of Comcast Deal, GE Promises to Keep Advertising NBC's Biggest Marketer Agrees to Spend 'Not Less Than $59 Million' Annually for Five Years By Andrew Hampp, Published on December 07, 2009 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. Become a Member Already a member? Log in.