As the news reports continue (despite the attempts to block them) you would be advised to follow events here:
Armed police mass in Lhasa:
Guardian – http://www.guardian.co.uk/world/2008/mar/18/tibet.china
Youtube has been blocked, which does not come as a surprise to those who know about these things:
Imagethief – http://news.imagethief.com/blogs/china/archive/2008/03/15/youtube-blocked-unsurprisingly.aspx
Chinese netizens have been busy debating the events and the media response:
CDT – http://chinadigitaltimes.net/2008/03/netizens-find-space-to-comment-on-lhasa-riots/
Videos and images have been leaking out of Tibet and Sichuan where the unrest has occurred:
CDT – http://chinadigitaltimes.net/2008/03/tibet-students-protest-at-beijing-campus/
The IOC have (again) emphasised that Boycotting the Beijing Olympics would not be in anyone’s best interests (and certainly not theirs):
Radio 86 – http://www.radio86.co.uk/china-insight/news-today/5543/no-calls-for-olympics-boycott-over-tibet-ioc
Western journalists discuss the difficulties of reporting in crack-down China:
BBC – http://news.bbc.co.uk/1/hi/world/asia-pacific/7302625.stm
The Dalia Lama urges people not to commit violence, while the Chinese government go on a media offensive against him:
The Guardian – http://www.guardian.co.uk/world/video/2008/mar/18/jiabao.dalai.tibet
The Telegraph links Tibet with the other ‘T’ word (no, not Taiwan, the other one):
Telegraph UK – http://www.telegraph.co.uk/news/main.jhtml?xml=/news/2008/03/15/wtibet915.xml

[...] the protests in China and around the world recently in the name of Tibetan independence security was extremely high for this occassion, and as yet [...]