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 Secret McRib Network Defunct as McD's Rolls It Out Nationwide Huge Effort May Take Fun Out of Cult Sandwich -- but It's Still Only Available for Limited Time By Maureen Morrison, Published on November 01, 2010 4 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.