So, I'm ready to release mt.el into the wild. If an emacs interface to your movable type weblog sounds like your cup of tea, you can download the code you need here:
http://www.marginalia.org/code/mt.el
http://www.marginalia.org/code/xml-rpc.el.
Complete documentation is included in mt.el. Let me know if stuff breaks, because it will. Have the appropriate amount of fun.
There is a mailing list for discussion and announcements here.
(And yes, this was posted using my text editor. Do you have a problem with that?)
Currently listening to: Beck - The Golden Age.
Awesome! Your code has been an inspiration to me.