Excellent guide and great initiative:
"Global Voices Advocacy is pleased to release another Advocacy 2.0 guide: Mirroring a Censored WordPress Blog. The guide, which has been written by Sami Ben Gharbia (Global Voices Advocacy Director), with Rebekah Heacock (a research assistant for the OpenNet Initiative) and Jeremy Clarke (Global Voices web developer and WordPress designer), is for bloggers with self-hosted* WordPress blogs who believe their sites may be blocked by government filters. Its goal is to help bloggers use a mirror site to make censored content available to readers despite these filters. It contains step-by-step instructions for setting up a mirror for an original (”source”) WordPress blog."