Looking both at how the Internet has changed during its first 40 years, and at technologies and techniques just making their appearance, computer scientists and electronic engineers, and scholars of information and communication offer theoretical frameworks for its next period of evolution. Among their topics are the user as a service, the physical layer aspects of wireless networks, analyzing high-speed performance through a prediction feedback based model, token-based mutual exclusion in peer-to-peer systems, and blending augmented reality with real world scenarios using mobile devices. Annotation ©2012 Book News, Inc., Portland, OR (booknews.com)