Thinking of tweeting during the 20th anniversary of the Tiananmen Square massacre? Keep your iPhone to yourself. Chinese authorities have stepped up censorship ahead of the sensitive June 4 anniversary.
Twitter has been blocked along with Hotmail, Microsoft’s new search engine, Bing, Flickr, Blogger, LiveJournal and Huffington Post.
Print media has not been immune either. In recent days, subscribers to The Economist magazine, the Financial Times and South China Morning Post found Tiananmen-related pages ripped out. And on TV, BBC viewers found the screen turned black on any reference to the event.
Google said access to YouTube in China had been restricted for several weeks now.
China has the world’s most intensive system of Internet censorship including automatic filtering plus active scrutiny by real life “cyber-police.”

