Emacs & weblogger.el
Weblogger.el offers a nice way to post directly to a Wordpress blog from Emacs; here’s a good description how to set it up.
In addition: When creating an entry, you can also set categories by adding a line “Keywords:” to the header, such as:
Keywords: Linux, Emacs, Noobs
I haven’t figured out how to do trackbacks yet, but I do that rarely enough. Even when I have to use the web interface, I can use Emacs via Mozex.