China-based video Web sites such as 56.com, youku.com and tudou.com did not post any protest scenes.

The article says internet users trying to call up the Web site saw a blank screen.

I experienced the blank screen frequently my three years in China.  I saw a blank screen when I searched for The New York Times.  I could not even access the website of The Loft Literary Center, nor did my email go through to The Loft.  On occasion when I surfed the net for a website about Tibet that was not obviously approved by the government, I would be presented with a screen stating I had tried to go to a forbidden area. 

In China, I learned that free speech is essential to the development of the mind.  If you don't know about something, you can't think about it.  My students were very proud that there was no racism in China. 
 
The article can be found at: http://news.yahoo.com/s/ap/20080316/ap_on_hi_te/china_youtube_blocked_4