There's another org2blog
Yesterday I found out that there's another emacs package called org2blog, just like mine. It does roughly the same task, too, just it publishes to Wordpress instead of to Blogger and other Atom API sites.
It looks like its conventions are almost all different. The only thing really the same is the "#+TITLE: " file property.
I emailed the author, suggesting that we should at least try to co-ordinate. I haven't heard back yet.