By James O'Toole, Pittsburgh Post-Gazette Thursday, June 04, 2009
As the anniversary of the Tiananmen Square upheaval approached, Internet users in China found new restrictions on access to Web sites offering accounts or commentary on the June 4, 1989, crackdown that brought the deaths of hundreds of demonstrators.
The New York Times and The Guardian reported that even social networking sites such as Twitter were blocked throughout China this week. Reuters reported that Hotmail similarly went dark across the country. The cyber censorship is nothing new, in China or elsewhere. One research and advocacy group, the OpenNet Initiative, reports that more than 25 countries have some kind of political or governmental censorship of the Web.