From Dow Jones:
The suit, in U.S. District Court in San Francisco, accuses Yahoo (YHOO) of voluntarily censoring and monitoring its Chinese users’ Internet activity since 2002, as a requirement for doing business in the country.
The information that Yahoo ultimately turned over to the government led to the arrest, prosecution, jailing and in some cases torture of about 60 people who used the Internet to discuss democracy and free-speech rights, according to the suit.[Full Text]
– See also another CDT post about this lawsuit.