China Turns Twitter Back On After Tiananmen Anniversary

On Monday, while China Web watchers were digesting the latest bit of news on the requirement that PCs sold in China include government-mandated Internet filtering software, the Web as we knew it a week earlier quietly returned.

On June 1, at around 5 p.m., Internet users across mainland China began reporting problems accessing popular social networking sites, such as, the Yahoo-owned photo-sharing site, and Microsoft's, and Hotmail.

The sudden unavailability of these sites led many Internet users to suspect that they had been blocked due to sensitivities over the 20th anniversary of the Tiananmen Square crackdown on June 4. And on June 3, dozens of Chinese Web sites also announced that they would be closed for technical maintenance for several days.

Now, it looks like most of these sites are back, though some popular sites that were inaccessible before last week remain so.

These include blogs hosted on and the video-sharing site, which has been unavailable for several weeks. Blogspot and YouTube are both owned by Google.

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