US plans massive data sweep: The US government is developing a massive computer system that can collect huge amounts of data and, by linking far-flung information from blogs and e-mail to government records and intelligence reports, search for patterns of terrorist activity.
Details emerge in China case - Yahoo reportedly supplied e-mails to authorities in 2003: Another case has surfaced in which information provided by Yahoo has been used to put a Chinese cyber-dissident in prison, according to advocacy group Reporters Without Borders.
