With this new social e-commerce play, Sina would also have another way to monetize the Weibo platform besides the plain display advertising.

FORBES: Sina Eyes Social E-commerce Integration as Market Blossoms

There are also news reports that suggest Sina is closely testing a new product, which allows e-commerce players to connect with their followers on Weibo.

FORBES: WeiboPay Helps Sina Reach $57 With Foray Into China's Online Payments Market

Similar to what Americans do at Amazon.com (AMZN), Chinese consumers are buying everything from Jin Yong novels to Lenovo laptops on sites like E-Commerce Dandang (DANG) and SINA Corporation (SINA).

FORBES: Where The Chinese Are Shopping

We believe the latest move makes sense for Sina in the long run on account of the big opportunity in the Chinese e-commerce market.

FORBES: WeiboPay Helps Sina Reach $57 With Foray Into China's Online Payments Market

"Weibo and Alibaba's e-commerce platforms are natural partners, " said Charles Chao, chairman SINA, the parent firm of Weibo.

BBC: Alibaba buys stake in China's Twitter-type Weibo service

Every Internet conglomerate ( Tencent, Alibaba, Baidu, Sohu, Sina, Shanda) has a search engine, 3rd party payment team, gaming, e-commerce platform, literature platform, etc.

FORBES: The China Paradox, Part 2: The Trouble With Going Global

Many investors buying Sina are buying it for weibo, which is accelerating its monetizing process after launching its virutal cash and e-commerce weibo platform this month.

FORBES: Earnings For China's Sina Corporation Could Disappoint