From BBC News (link):
Repressive regimes are taking full advantage of the net’s ability to censor and stifle reform and debate, reveals a report.
Written by the Reporters Without Borders (RSF) pressure group the report highlights the ways governments threaten the freedom of the press. The report has a section dedicated to the internet and the growing roster of nations censoring online life.
China was the nation that came in for most criticism for its efforts to monitor and censor the net. The RSF noted that net censorship in the country had undergone a significant shift in the last two years.
Originally, said the report, China was only interested in monitoring political dissidence on the net. Now its scrutiny covers general unrest in its population – ironically something that has grown because the net makes it easier for people to communicate.
Download the report (PDF) “Freedom of the Press Worldwide in 2006”