…Not only do authorities block Twitter, Facebook…[China] also insists that Web firms manage and remove sensitive content…Facebook…[has admitted] that the firm may never be able to satisfy the country’s demands…users are generally restricted from accessing Facebook…Facebook has been tipped to enter China through a partnership …Google…is legally operational in China…Access to Google+ has been blocked…Gmail has had issues, while Android had shaky times…Aside from relocating its search business to Hong Kong…company’s executive chairman labelled its censorship measures as “a truly bad set of laws”. Twitter…introduction of a feature to allow censorship …[CEO] Costolo recently labelled China as “not a place that we could operate in”…Its equivalent microblogging services (Weibos)…run by Sina and Tencent both have more than 250 million registered accounts each...Sina Weibo’s rumour control team works 24 hour days to ‘unpollute’ content and false rumours…