Field of knowledge management focuses on how organizations can most effectively store, manage, retrieve, and enlarge their intellectual property. Expertise sharing emphasizes the human aspects - cognitive, social, cultural, and organizational - of knowledge management, in addition to information storage and retrieval. Rather than focusing on the level of organizational management, sharing of expertise focuses on self-organized activities of the organization? Members s. It consists of three parts: an introduction to knowledge sharing in large organizations; empirical studies to share expertise in various kinds of settings, and detailed description of a computer system that can query the route, collecting people and work, and improve the natural social networks within the organization.