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 Egg McMuffin for Dinner? Restaurant Marketers Wake Up to $50B Breakfast Opportunity McDonald's Considers All-Day Morning Menu as Everyone From Pinkberry to Denny's Rethinks the Meal By Maureen Morrison, Published on May 13, 2013 2 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.