Platforms like Myspace, Facebook, and Linkedin have created online communities where people can share as much or as little personal information as they desire with other members. The result is an enormous amount of information that can be easily shared, searched, promoted, disputed, and created.
Social Media in China:
Renren.com as Facebook
Weibo as twitter
Youku.com, Tudou.com as YouTube
Also we have Weixin, Feixin as Linkedin.