Libraries are entering a second phase of their networked life. In the first they thought about how to connect their services to the network. However, now that the network has reconfigured behaviours and structures in significant ways, a new set of issues needs to be addressed. In this second phase, libraries need to create value in an environment where major web presences have changed how people search for information, where the conduct of learning and scholarship is changing, and where scale and network effects are increasingly important. Combining published blog entries and new material this collection explores these issues and considers some library responses.