"Probably the most conclusive piece of evidence to support the rumor is the introduction of an English version of its iPhone app last month," writes The Next Web. As of May, Sina Webio was reportedly reaching more than 140 million registered users, and expects to top 200 million users by the end of the year. Adds The Next Web: "It will be interesting how Sina Weibo will apply the mandatory China censorship to other countries, especially ones that are protected by laws on Internet freedom, which require sites to be completely open."