Almost everything that happens in a firm flows through informal networks builts by advice, coordination, cooperation, friendship, gossip, knowledge, and trust. In this book, Ron Burt builds upon his celebrated work on network analyses to explain how these informal networks functions and the role of network entrepreneurs who have amassed social capital. Burt shows that social capital is a critical element in business strategy. Who has it, how it works and how to develop it have become key questions as markets, organizations and careers become more and more dependent on informal discretionary...