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 'Groupon for Moms' Takes Page From Mary Kay Powered by Female Sales Force, Plum District Raises $8.5 Million in Second-Round Funding From Kleiner Perkins By Irina Slutsky, Published on January 26, 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. Register Now Already a member? Log in.