THIS BOOK PRESENTS THE GOALS THAT DRIVE THE DEVELOPERS OF THE BEST-KNOWN PEER-TO-PEER SYSTEMS, THE PROBLEMS THEY'VE FACED, AND THE TECHNICAL SOLUTIONS THEY'VE FOUND. THE CONTRIBUTORS ARE LEADING DEVELOPERS OF WELL-KNOWN PEER-TO- PEER SYSTEMS, SUCH AS GNUTELLA, FREENET, JABBER, POPULAR POWER, SETI@HOME, RED ROVER, PUBLIUS, FREE HAVEN, GROOVE NETWORKS, AND REPUTATION TECHNOLOGIES. TOPICS INCLUDE METADATA, PERFORMANCE, TRUST, RESOURCE ALLOCATION, REPUTATION, SECURITY, AND GATEWAYS BETWEEN SYSTEMS.