Write your blog posts with org-mode, publish with Jekyll. There are other solutions for blogging with org-mode, but personally I think they are too cumbersome to use, lacks features, etc. There are many advantages with using org-mode instead of Jekyll's default Markdown, including proper source code syntax highlighting provided by Emacs (i.e your code will look the same in your editor and on your blog - no compromises).

• Emacs with org-mode
• Jekyll or Hyde (my fork of Jekyll)
• Hpricot (gem install hpricot)

• Copy the statements in org-settings.el into your Emacs configuration (remember to modify the paths).

The best way to learn how to use this is to look at the source of an example blog, e.g. my personal one. There's also a small example blog in the sample/ folder. Here are the basic steps:

• Create blog posts (one post per org-file), use tags on the toplevel outline to add post categories (the main title in the org file will actually be stripped away, the filename forms the post title, following Jekyll conventions).
• Use M-x org-publish to export the org-files to HTML.
• Run the pre-process.rb file from the top level of your Jekyll dir (~/blog/ in the example config). This script modifies the HTML from the previous step and makes them consumable by Jekyll. This step can be performed automatically by configuring the org publish-project.
• Run jekyll.

• The pre-process script is probably a bit too specific to the way I organize my posts. I guess it can be generalized quite a bit.