This is an experiment with a subtly different format.
Right now when I want to say something quickly, I pop open the Twitter app and just type it. But I realized that the only reason I'm doing this rather than publishing on my own site is a UI affordance: Twitter lets me hit two keys to start composing, ⌘N and then two keys to finish, ⌘Return. Also, to tweet something, I don't need to come up with a title.
So I added an Emacs minor-mode that lets me hit a comparable number of keys; translated into the Emacs keyboard shortcut idiom it is of course Meta-Shift-Control-Hyper-CBackflip-LeftPedal-N to create a post and Bucky-Reverse-Erase-xOmega-Shift-Epsilon-j to publish it. Such posts will be distinguished by the presence of the "microblog" tag and the empty title.
(Also, the sky's the limit in terms of character-count.)
Feel free to let me know if you think the format works or not.