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 In a CPG First, General Mills Tries Groupon 12-Item Grocery Offer Drew Plenty of Takers, but Challenges Remain for Packaged Goods Marketers and Deal Site By E.J. Schultz, Published on April 21, 2011 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.