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 Dannon Goes Greek, Takes on (Former) Little Guy Sergio Fuster Tackles Marketing for Oikos, Contends With New Restrictions on Activia By E.J. Schultz, Published on September 26, 2011 1 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.