Video browsers in general, and bloggers in particular, should know that China has blocked YouTube. The Reuters report tells us that the ban has been in place over the past 24 hours, and the reason is supposedly unknown. However, Committee to Protect Bloggers posted this:
Xinhua, the Chinese news agency reported that the government blocked access to the site after a fabricated video showing C hinese police brutally beating up Tibetans during the riots last year. The description of the offending video fits one that was posted by the Tibetan government in exile and is a collage of varios clips showing the police putting down the riots brutally.
This is not the first time YouTube is banned in China. Several other countries have bans in effect as well. More on Techmeme.