At first, Liu Xiaoyuan (劉曉原) just fumed when his online journal postings disappeared with no explanation. Then he decided to do something few, if any, of China's censored bloggers had tried. He sued his service provider.
"Each time I would see one of my entries blocked, I'd feel so furious and indignant," said Liu, a 43-year-old Beijing lawyer. "It was just so disrespectful."
Liu's frustration is hardly unique. For China's 162 million Web users, surfing the Internet can be like running an obstacle course with blocked Web sites, partial search results and posts disappearing at every turn.
Blog entries like Liu's, which mused on sensitive topics such as the death penalty, corruption and legal reform, are often automatically rejected if they trigger a keyword filter. Sometimes, they're deleted by human censors employed by Internet companies.
In the lead-up to the sensitive Communist Party Congress, which convenes on Monday to approve top leaders who will serve under President Hu Jintao (
"What you see now is unprecedented," said Xiao Qiang (蕭強), director of the China Internet Project at the University of California, Berkeley. "They are forcing most of the interactive sites to simply close down and have unplugged Internet data centers. These are things they haven't done before."
Thousands of sites suddenly went offline in August and last month when Internet data centers, which host Web servers, were shut down. In three cities, some services were temporarily cut off, while some interactive Web sites remain unplugged -- until after the congress.
It is not uncommon for authorities to crack down on public opinion before party congresses, which are held every five years.
In an increasingly wired China, political rumors and speculation that used to end up in Hong Kong's more liberal media are now often found circulating first in Chinese cyberspace.
The government has built a patchwork system of controls that include software to root out offensive keywords and block blacklisted Web sites. Government censors, known as Net nannies, surf the Web looking for pornography, subversive political content or other illegal material. Major Internet portals like Sohu.com and Sina employ their own censors to make sure nothing runs afoul of government restrictions.
In a report this week, Reporters Without Borders said China's Internet censorship system "is unparalleled anywhere in the world and is an insult to the spirit of online freedom."
Commercial sites that don't comply with censorship orders are criticized, fined, forced to fire the employee responsible for the error or closed down, the Paris-based group said. A point system is also used to keep track of compliance, with sites that rack up a certain number of demerits at risk of losing their business licenses, it said.
To underscore its determination, the government also imprisons people who mail, post online or access politically sensitive content within China. Reporters Without Borders says 50 Chinese "cyber dissidents" are currently in prison.
All the controls reinforce a climate of fear and obedience that keep most Internet users in line, experts said.
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