After defining what constitutes a "virtual world," an intellectual property attorney explains issues relating to virtual law: e.g., game players' rights, and debates over virtual property and real money trading, evidence collection from simulated worlds, and defamation in that realm. The book reprints excerpts from an article on vigilante justice in Ultima Online (a multi-player online game) and a compilation of legal resources in Second Life (a role play virtual world). Appendices include a declaration of the rights of avatars and legal complaints about online vendors. Duranske co- chairs the American Bar Association's Committee on Virtual Worlds and Multiuser Online Games. Annotation ©2008 Book News, Inc., Portland, OR (booknews.com)