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 Why C7 Won't Be an Upfront Standard This Year Despite GroupM Agreements Buyers Elsewhere Say One Size Doesn't Fit All By Jeanine Poggi, Published on June 03, 2014 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.