This article includes a one-page preview that quickly summarizes the key ideas and provides an overview of how the concepts work in practice along with suggestions for further reading. Marketers in a variety of industries are trying to increase customer loyalty, marketing efficiency, and brand authenticity by building communities around their brands. Few companies, however, understand what brand communities require and how they work. Drawing from their research as well as their experience at Harley-Davidson, the authors dispel some common misconceptions about brand communities and offer design principles, cautionary tales, and new approaches to leveraging those communities. For instance, many managers think of a brand community in terms of marketing strategy. In fact, for a community to have the greatest impact, it must be framed as a corporate strategy. Realizing this, Harley-Davidson, for example, retooled every aspect of its organization to support building and maintaining its brand community and treated all community-related activities not just as marketing expenses but as a companywide investment. Another common misconception is that a brand community exists to serve the business. An effective brand community exists to serve its members, who participate in order to fulfill many kinds of needs, such as building relationships, cultivating new interests, and contributing to society. Strong communities work to understand people''s needs and to engage participants by offering a variety of roles. Finally, managers often think that a brand community must be tightly controlled. In reality, a robust community defies managerial control. Effective brand stewards can, however, create an environment in which a community can thrive - by, for example, designing multiple experiences that appeal to different audiences. The authors offer an online "Community Readiness Audit" that can help you find out if your organization is up to the task of building a brand community.