There are some numbers you should notice. All of them are about Tencent’s QQ, China’s leading online community (270 million accounts, 400 million USD in revenues in 2007).
Here is the pdf version  of TENCENT ANNOUNCES 2007 FOURTH QUARTER AND ANNUAL RESULTS from it’s offcial site.
From plus8star.com:
QQ’s 2007 figures

Active accounts: 300 million

This is 50% more than [...]

From: China Web2.0 Review
CNNIC just released its latest semi-year report on development of Internet in China. According to the report, by the end of 2007, the number of Chinese Internet users has reached 210 million, an increase of 48 million in last six months, or 73 million in last year. Among these 73 million new [...]

source: Xinhuanet, 1/26/08
edited by www.marbridgeconsulting.com
China’s Ministry of Information Industry (MII) has released its full-year 2007 telecom industry statistics. Telecom revenues totaled RMB 728 bln (USD 98 bln), up 10.9% YoY.
Mobile subscribers grew by 86 mln in 2007, pushing the total above 547 mln, and increasing mobile teledensity to 41.6%. Over 592 bln SMS were sent [...]

Tong Gang, director of the Film Bureau of the State Administration of Radio, Film, and Television, disclosed that in 2007 China produced 402 feature films with RMB 3.327 bln earned at the box office. A total of 78 films were sold to 47 countries and regions, with revenue from overseas distribution totaling RMB 2.02 bln. [...]

According to statistics from the China Internet Network Information Center (CNNIC), China’s netizens had reached 210 million by December 2007, an increase of 73 mln year-on-year, and 48 mln more than the number in H1 2007. Internet penetration has reached 16% of the overall population. In addition, broadband subscribers have reached 163 mln and wireless [...]