RSF (Reporters san Frontiers - Reporters without Borders), a French press freedom of rights group - have produced a book (online, PDF format) that provides basic definitions and technical advice on how to to remain anonymous and to get around censorship, by choosing the most suitable method for each situation - and it's sponsored by the French foreign ministry! (Can't see Alexander Downer sponsoring this type of publication!)
"Bloggers are often the only real journalists in countries where the mainstream media is censored or under pressure. Only they provide independent news, at the risk of displeasing the government and sometimes courting arrest," RSF said.
I've just quickly glanced through the contents and was particularly engaged by the chapter on ethics by Dan Gillmor "What ethics should bloggers have?". More comments on that over at my PhD weblog...
It also includes some case studies and personal accounts from bloggers in countries where internet censorship is an issue. I haven't had a chance to read these yet...perhaps sometime over the weekend....looks like a valuable addition to the weblog references!