Knowledge is becoming increasingly important in our society today. In companies, the factor of knowledge plays a central role: the management of this resource has come into sharp focus in recent years and is often seen as a key factor that can represent a significant competitive advantage. This book focuses on the connection between wikis in companies and knowledge management. It addresses the influences of currently available Web 2.0 applications on knowledge management within organizations. To describe these effects more precisely, the productive implementation of a wiki pilot project at Deutsche Postbank AG is illustrated. In addition to the achievable benefits, existing barriers and problems are also taken into account. The book is aimed at all those interested in this topic. Through the integrated practical example, it also provides companies that are discovering the topic of Web 2.0 with a helpful guide full of suggestions.