In case it went under your radar, Vijay who is the rocking radiologist from India and from the Scan Man's Notes blog - he started something that he calls "Medical Microblog." It's through a Wordpress template and it's basically what it says. It's not really Twitter blogging but not really full blogging either.
It was kind of curious to me in that I wanted to try out the Wordpress blogging app for the iPhone. The app works pretty good. And, for a long time, I have been thinking of changing the entire Doctor Anonymous blog over to Wordpress. When Vijay started the microblog, I said, "Yay, the next incarnation of the I'm A Blogaholic blog. If anyone remembers that."
So, great idea Vijay. Will I use the Medical Microblog? Not all the time, but it's an interesting new way to express yourself out here. But, for me, still the primary ways of written blogging will still be Twitter and this main blogger blog - at least for now...