How to move your Radio Userland weblog to the Python Community Server:
I've done this twice and it works. It wipes out your existing theme and uses the default, but keeps your existing weblog entries. You can publish your main weblog, tinker with templates and themes, and do most of RU's other core features.
Not implemented yet: publishing a category as HTML or XML, upstreaming to folders (such as /gems), tracking referers.