http://news.yahoo.com/s/ap/20080317/ap_on_hi_te/china_youtube_blocked

Internet users in China were blocked from seeing YouTube.com on Sunday after dozens of videos about protests in Tibet appeared on the popular U.S. video Web site.

The blocking added to the communist government’s efforts to control what the public saw and heard about protests that erupted Friday in the Tibetan capital, Lhasa, against Chinese rule.

Access to YouTube.com, usually readily available in China, was blocked after videos appeared on the site Saturday showing foreign news reports about the Lhasa demonstrations, montages of photos and scenes from Tibet-related protests abroad.