Hi all, I added ox-rss.el, a rudimentary RSS 2.0 export back-end: http://orgmode.org/cgit.cgi/org-mode.git/plain/contrib/lisp/ox-rss.el?id=137207
See the commentary section for instructions on how to use it. Basically, the idea is to define a new publishing project that will take care of publishing a .xml RSS 2.0 feed. Blog posts are top-level headlines. One possibility to use this for a blog is to maintain an .org file with the summary of your headlines in a separate files as top-level entries, then to export this file as a RSS feed that you can link anywhere else on your website. I plan to include this in 8.0 unless it's too buggy or useless. Please test this heavily and let me know if it works for you! Thanks, -- Bastien