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 Marketers: Beware the Coupon Mom Not Just a Savvy Clipper, She Knows All Your Tricks -- and Is Teaching Others to Resist Them By Kunur Patel, Published on July 11, 2011 19 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.