One of the clearest blog posts with the how-to and the background info on how to go about anonymous blogging, for people who want to tell the truth where doing so puts their personal safety at risk.
Elsewhere, Reporters Sans Frontieres also has a really helpful Handbook for Bloggers and Cyber-Dissidents.
Also worth a look – blog awards – 60 international blogs that in some way defend freedom of expression – the Freedom Blog Awards.
This all reminds me of a newspaper article I read a while back. Can’t remember where it was, but it must be here somewhere as it hit me strongly, and I know I cut it out. It was about blogging in Africa, and in particular, in the Congo. The writer asked a Congolese blogger why he felt that there was so much more blogging activity in his country than in surrounding countries. His reply: “he who aches the most screams the loudest”.
Another good piece about that blogger here – in an interview on Global Voices.
Update Oct 21:
Also check out the Anoniblogging Wiki. In addition to English, it includes anonymous blogging guides in Persian, Arabic and Chinese.