Wikimedians who found Charles Mok's Wikimania speech (the Saturday keynote) educational may like to read "Collateral Freedom: A Snapshot of Chinese Users Circumventing Censorship", an OpenITP report that he cited in his talk:
http://openitp.org/news-events/collateral-freedom-a-snapshot-of-chinese-user...
Also: the Hong Kong Circumvention Tech Summit report: http://openitp.org/pdfs/CTS3report.pdf from the Hong Kong CTS that OpenITP ran in April 2013.