I have frequently advocated the use of China's SNS in order to have a presence in China. I have had a Sina Microblog 新浪微博 for several weeks weibo.com/andreschappo. Sina's Microblog is a closed system so you will need to register an account in order to view my microblog. The exception is that with Verified Users one can view the first few postings without an account. My account is not verified.
On Saturday, with the help of 刘家杰, I created a Sina Blog 新浪博客 blog.sina.com.cn/andreschappo. Unlike Sina Microblog, Sina Blog is an open system and so you can view my blog without registering an account.