Sina CEO Charles Chao said Sina Weibo already have over 250M users, and there are 100M tweets on there in a day.
Last year he said there business models are "advertising", "social games", "real-time search," "value-added services", "EC", "Digital Content", and Sina will accelerate to expand their 6 business model.
Particularly, Sina recognize EC business is the most important thing to expand their business, from last year they already started virtual money service and prepare some EC pages with partner on their Weibo system.
Of course they will expand their business to overseas, so they have been preparing the English version of their Weibo, and on the other hand they advertised on Times Square in New York when Sina Weibo was 2 years old.
In China, Sina Weibo will have over 400M users at the end of 2012. I think their challenges in 2012 will be making profits, increasing there active users and go to the overseas market.
I would like to keep tuned what actions Sina Weibo will take in order to solve their challenges in this year.
Original article => CCIDnet, A miscellaneous notes of Micorblogging(Weibo) in China