DON PEPPERS and MARTHA ROGERS, PhD, are the founding partners of Peppers and Rogers Group, a Carlson Marketing Group Company based in Norwalk, Connecticut (www.1to1.com). They are the coauthors of five bestselling books about one-to-one customer relationships and were named by Business 2.0 magazine as two of the most important business gurus of all time. Peppers was formerly the CEO of a top-20 direct marketing agency, and Rogers is an adjunct professor at The Fuqua School of Business at Duke University, as well as Codirector of the Teradata Center for Customer Relationship Management at Duke University (www.teradataduke.org).