ACNielsen, a VNU business, is the world's leading marketing information provider. Offering services in more than 100 coun-tries, the unit provides measurement and analysis of marketplace dynamics and consumer attitudes and behavior.JOHN KAROLESKI is Editor of an e-magazine called CPGmatters.com. It covers in-store marketing and category management. He is the coauthor of two books, Target 2000: The Rising Tide of TechnoMarketing and All About Sampling. He was formerly senior editor of Supermarket News and editor in chief of Brand Marketing.AL HELLER, President of Dis-tinct Communications, LLC, is the author of numerous consumer packaged goods industry studies and three books. He was formerly editor in chief of Nonfoods Merchandising and Supermarket HQ Quarterly, and executive editor of Drug Store News.