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 [...]