Radiohead in Chinese social network.

Radiohead has taken a tentative step into censored Chinese cyberspace, even though the British rock band has been critical of China's human rights record.

Radiohead recently launched a page on the "weibo" site of leading Chinese Internet portal Sina.com. "Weibo," which translates as "microblog," is the Chinese-equivalent of Twitter.

But the band has only posted a single message on Friday. It says "testing the weibo."

Sina.com checks the authenticity of celebrity weibos and has certified the Radiohead weibo as genuine.

The move comes despite Radiohead's activism against Chinese government policies. The rock group has performed at Free Tibet concerts and in December, posted a note on its official website urging fans to campaign for the release of Chinese dissident Liu Xiaobo, who won the Nobel Peace Prize last year. "You know it makes sense," the band said.