I'm thus far thrilled with blohg as a blogging platform. I've got a large post I'm finishing up now with quite a few snippets of source code in two different programming languages. I was hoping to use the excellent SyntaxHighlighter javascript library to prettify those snippets, and was surprised to find that docutils reStructuredText doesn't yet do that (though some other implementations do).
Fortunately, adding new rendering directives to reStructuredText is incredibly easy. I was able to add support for a .. code mode with just this little bit of Python: