DATELINE: Beijing (Oct. 18, 2007): There is a small group of expats who speak fluent Mandarin and are extremely knowledgeable about social media, Web 2.0, etc. in China. Three of the best are Sam Flemming, Jeremy Goldkorn and William Moss. Here are their blog/sites, along with some other great resources.
China Web 2.0 Review
Ogilvy China Digital Watch
You have to know about these in order to get to sites like Technorati.com, which is blocked in China.
Anonymouse.org (server in Germany)