Microsoft has recently unveiled its joint venture in China by announcing partnership with Sina Corp. In the joint venture Sina Corp. will link Microsoft’s instant messaging service with the China’s biggest micro blogging service. Both, Microsoft’s Windows Live Messenger and Sina Corp’s Sina Weibo were launched in 2009 and have tens of millions of users. Also  Sina Corp. has claimed that it is looking to reach 100 million users by next year. There is no clear indication of when this venture will begin.

Sina Weibo is a Twitter-like micro blogging service from China will link their accounts created by different users to the Microsoft’s instant messaging tool Windows Live Messenger. Users will also get the Sina Weibo messages displayed automatically on the instant messages contacts.

This is not the only one venture of Microsoft in China. Before this, known as the MSN China, is a joint venture of Microsoft and Shanghai Alliance Investment Ltd.  Windows Live Messenger, MSN web portal along with the other Microsoft Internet services in China, including the company’s MSN web portal are operated by Shanghai MSN Network Communications Technology Co. or MSN China.

The new partnership of Microsoft with Sina will also include the migration of the Microsoft’s Blogging Service i.e. Windows Live Spaces to Sina’s blogging service. So does that mean that Microsoft is trying to exit from the blogging business?

However, it is heard that Microsoft is also providing the search results from its search engine, Bing to the Chinese e-commerce giant Alibaba Group for a new e-commerce-focused search website that is in the testing phase.