Chinese dissident Wang Xiaoning was released today after serving a 10-year prison term on charges of "incitement to subvert state power," a case built in good part on client information supplied by Yahoo. Wang had used his Yahoo email account and the discussion forum Yahoo Groups to spread ideas the government deemed dangerous. His case closely parallels that of journalist Shi Tao, another Yahoo user who fell afoul of the Chinese government. In 2005, Shi was convicted of "illegally leaking state secrets abroad" and given a 10-year sentence. Yahoo had helped authorities identify Shi through his account information.