Write blog posts in Markdown format, then use BlogLiterately to do syntax highlighting, format ghci sessions, and upload to any blog supporting the metaWeblog API (such as Wordpress).
To get started, use the provided executable BlogLiterately
; see
http://byorgey.wordpress.com/blogliterately/
for complete documentation.
To make further customization possible, the internals of the
executable are made available as a library. In particular, it is easy
to create your own executable which adds extra custom transformations;
see Text.BlogLiterately.Run
.