Open microblogging platform Sina micro-blog is a system based on open information subscriptions, sharing and exchange platform. Open microblogging platform gives you a massive microblogging information, fan relations, as well as information on fission occurs anywhere communication channels.
You can log in and create a platform for applications, use the microblogging platform provides the interface to create interesting applications, or to get your site has more social features.
More info at: http://open.weibo.com/wiki/index.php