For the last 3 days, I've been keeping up and posting primarily through my new Blackberry.
It's been mixed. The Blackberry keyboard is a little different in the placement of keys - close, but just enough offset that a good typist, like me, makes a few typos. I have to look at the keys, rather than the screen.
As a result, I tend to create shorter posts, with fewer links. Over time, I expect I'll get more comfortable with the keyboard.
It is, however, terrific for staying connected away from home.