The recent Geek on a Plane Tour left some good info in its wake; a list of slideshare docs below will give you a general understanding of the state of China online advertising, mobile, games and the evolution of China's internet in general.
Google China: The Chinese Internet Overview
Startup Metrics for Pirates (Startonomics Beijing, June 2009)
Online Games: The Coming Chinese Wave
China Mobile Online Games Market Overview
China Internet Metrics: ChinaNetCloud
Western Internet Companies in China & Chinese Internet Companies in the World
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