From The Guardian, George Monbiot writes:
“In April, Shi Tao, a journalist working for a Chinese newspaper, was sentenced to 10 years in prison for “providing state secrets to foreign entities”. He had passed details of a censorship order to the Asia Democracy Forum and the website Democracy News.
The pressure group Reporters Without Borders (RSF) was mystified by the ease with which Mr Tao had been caught. He had sent the message through an anonymous Yahoo! account. But the police had gone straight to his offices and picked him up. How did they know who he was?
Last week RSF obtained a translation of the verdict, and there they found the answer. Mr Tao’s account information was “furnished by Yahoo Holdings”. Yahoo!, the document says, gave the government his telephone number and the address of his office.”