Global Voices Advocacy has released Advocacy 2.0 guide: Mirroring a Censored WordPress Blog.
The guide is intended for bloggers with self-hosted WordPress blogs who believe their sites may be blocked by government filters. The guide 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.
There is also a lot of useful info on WordPress security.
Mirroring a Censored WordPress Blog is availble for download as a PDF file at: http://advocacy.globalvoicesonline.org/2010/04/22/guide-mirroring-a-censored-wordpress-blog/