According to the Seasonal Survey of Chinese Micro-blog Market 2011 Q4, the number of active users in Chinese micro-blog market was 249 million, with a sequential growth rate being 18% and a year-on-year increase of 146.5%.
There are three reasons for the growth of active micro-blog users to slowed down and reached a steady level:
1. Following the boom in the first half of 2011， the growth of micro-blog users tended to be steady. The growth rate has fallen from 21.3% in Q3 to 18%. Micro-blog providers offer new products to satisfy user's social need and improve users' fidelity so as to maintain a steady growth of the number of active users.
2. Chinese micro-blog providers mainly come from portal； therefore， the content of micro-blog is enriched. Through portals， users get information relative to micro-blog， which greatly improves micro-blog users' experience.
3. The number of registered micro-blog users came down due to the real name system. However， the qualification of users has been greatly improved， so as the content of micro-blog. In this way， the number of active users is kept steady.