Rings is dedicated to the full range of topics surrounding the summer Games in Beijing, from the competition itself to the social, political and economic issues attached to them. Rings brings together analysis and perspectives from sports, foreign and business reporters at The New York Times and in its bureaus around the world.

"We expect the Rings blog, which draws on The Times's talent and resources across all departments, to become a must read for those interested in all aspects of the Beijing Games," said Sandy Keenan, deputy sports editor, The New York Times. "The blog will serve as an engaging platform for continuous sports and news coverage during the Games."

The Games in Beijing are already generating worldwide attention, and Times journalists have begun to post about issues such as the controversy surrounding the torch relay, the intricacies of the Olympic trials in the United States and discussions of Web censorship by China's government.

The IOC has set out guidelines for blogging at the Beijing Games to ensure copyright agreements are not infringed.

They include bans on posting any audio or visual material of action from the games themselves.

The move follows the increasing use of unofficial blogs by athletes in previous Games, including Athens in 2004 and the Turin Winter Games.

"It is required that, when accredited persons at the games post any Olympic content, it be confined solely to their own personal Olympic-related experience," said an IOC statement.

Blogs should not have exclusive agreements with any company and there should be no commercial reference or advertising either, the IOC said.

Blogs should also adhere to the Olympic spirit "and be dignified and in good taste."

Both Blogcn and Bokee have filtering systems that prevent users from writing about taboo topics. A Blogcn user, for instance, who tries to write "Falun Gong" will find the term converted to gibberish on screen. If a forbidden phrase makes it past the filter, the company might get a call from the police demanding that the offending post be removed. "We can immediately fix it," says Hu, who adds that he has gotten only "four or five" such calls in the past two years. It's not just Chinese companies that cooperate with the censors. A joint venture operated in China by Microsoft Corp.'s MSN blocks words such as "democracy" in the subject lines of blogs on its site. Microsoft says it simply is complying with Chinese laws and norms. And China's censors can intercept traffic from overseas services such as the one that hosts Muzi Mei's blog. For instance, San Francisco-based Six Apart, which is home to some Chinese-language blogs, has been blocked from the mainland twice. "China would be an opportunity for us if a Western company could go in and have a dialogue, but right now that's not the case," says Anil Dash, a Six Apart vice-president.