Thomas Brand, in an interview with Shawn Blanc:
I carry my MessagePad and keyboard separated in two large jacket pockets, or sandwiched together in the Newton keyboard case. When I am writing I position my MessagePad in a landscape orientation with the keyboard in front, and my wallet underneath to give my Newton the desired viewing angle. My MessagePad can only display ten lines of text at a time so I tend to write in small paragraphs correcting my prose with the stylus as I go.
When I am finished writing I return home and transfer the notes from my MessagePad 130 to a MessagePad 2100 via infrared. I use a 802.11b wireless card to email what I have written from the 2100 to whatever modern Mac I am using at the time.
I used a 2100 with a keyboard in college to take notes in class. While the ladies loved it, I ended up selling to pay off my wife’s engagement ring.
I now own an eMate 300, which I love. I use it to write some of the longer posts here on Forkbombr. They keyboard is pretty usable, and the minimal interface (and distractions) make it a pretty decent writing environment.
With Markdown, writing with a Newton or eMate is even easier, since all of the markup is easy to do in plain text. I can write something up, shoot it to my Mac, and post it with little friction.