Howard Rheingold has been called the First Citizen of the Internet. In this book he tours the "virtual community" of online networking. He describes a community that is as real and as much a mixed bag as any physical community -- one where people talk, argue, seek information, organize politically, fall in love, and dupe others. At the same time that he tells moving stories about people who have received online emotional support during devastating illnesses, he acknowledges a darker side to people's behavior in cyberspace. Indeed, contends Rheingold, people relate to each other online much...