Google’s Hong Kong question page blocked in China

A question-and-answer page on Google Hong Kong's website became inaccessible to some mainland Chinese users on Tuesday, underscoring Beijing's sensitivity about the Internet.
The Chinese government, obsessed with maintaining social stability and controlling the flow of information, requires all search engines operating on the mainland to self-censor. It uses a "Great Firewall" to block overseas sites with content it considers subversive or dangerous.
The Google page ( www.google.com.hk/wenda ) provides Chinese-speaking Internet users with a forum to ask questions of any description and some visitors had veered into highly sensitive territory.
Several recent questions concerned the June 4, 1989, crackdown on pro-democracy demonstrations around Beijing's Tiananmen Square, a topic banned from public discussion in China.
One questioner asked when China would have its next Tiananmen uprising, with answers including "soon; the Communist Party will collapse".
Others included profanities about former leader Mao Zedong or sensitive contemporary issues like recent protests to protect the Cantonese language in the southern Chinese city of Guangzhou, which ended in scuffles with police last weekend.
Multiple users in China reported getting error messages when they tried to access the page. Google said it was investigating.
Google angered Beijing earlier this year by announcing it was no longer willing to comply with censorship rules. The firm closed its local search site and redirected traffic to its Hong Kong site.
China has the world's largest Internet market by users at 420 mln.