I now live and work in SW China so let me assure you there is outright blockage of certain well-known websites. The kind that were attributed to allowing for more widespread communication during a few of the Arab Spring uprisings earlier this year. Without a VPN workaround, one cannot commonly access YouTube, Twitter, Facebook, Hulu, even Rolling Stone. I kid you not. Even Google got asked to leave China and now is situated in Hong Kong. If you do a Google search you get re-routed to Hong Kong.