Throughout the past nine years, academics, technologists, and managementprofessionals have produced significant bodies of work on knowledge andcommunities. While some experts have focused on the informal associations of like-minded people, gathered around common interests or shared contexts, others have highlighted the economic, social, and human potential that may exist when communities are successfully supported and fertilized by organizations. Despite these two divergent research paths, one thing is clear-communities are the source for unlimited knowledge sharing, social learning, and innovation. As this body of work is expanded, communities of all types will come to play a critical role in creation of new knowledge as well as serving as the primary vehicle for the exchange of best practices, social capital, and organizational learning.