Sina Weibo claims its daily active users in Q4 2013 are 61.4 million, as its parent company reported yesterday, instead of 25 million as it was rumored one month ago. Source: CompanyAs you can see in the chart above, Sina stock price reached the highest point when Weibo got 100 million users. The stock price hadn’t changed much until Alibaba, the Chinese e-commerce giant, announced to buy a stake in Sina Weibo and promised to help the latter make money by placing Taobao/Tmall ads on Weibo platform. Later the two companies would show Weibo users display ads, enable Weibo users to buy Taobao/Tmall items directly through Weibo posts, and let retailers interact with their Weibo followers from Taobao’s system. It’s hard to measure how much WeChat has affected Sina Weibo, but it’s actually been a while since people began complaining information overload and increasingly more ads on Sina Weibo.