Chinese Sites Block Discussion of Internet Freedom

A day after U.S. Secretary of State Hillary Clinton's pledge to promote Internet freedom world-wide, Chinese censors tried to snuff out efforts by U.S. diplomats to generate debate on the issue on Twitter-like microblogs in the country with the world's most Internet users -- and its most sophisticated censorship system. The virtual tussle highlighted the growing importance of such microblogs in China as a new frontier for lively discussion and information sharing that is so fast-paced that censors often have difficulty keeping up.