The lead article in the Summer 2011 edition of the AIME newsletter by Arnold Lutzker, “John Doe Lawsuits: A Club Against a Torrent of Movie Downloads,” discusses the new flurry of litigation by movie companies taking on users of the popular file-sharing software Bit Torrent in an attempt to stop the illegal downloading of movies.  The term “John Doe” lawsuits refers to the fact that the suits are filed against defendants who are only identifiable by their IP address, not their names.  Using a technique pioneered by the Recording Industry of America (RIAA) in the early 2000s and validated in the courts, once the case is filed, the copyright plaintiffs obtain the actual identity of the subscribers via subpoenas to the online service providers (e.g. cable systems and phone companies).  Once the identities are established, names of people replace “John Does,” and the plaintiffs try to extract a financial settlement and a promise to quit the practice.   The article discusses the copyright theory of the cases and their possible outcomes.