I don't know how many times I've heard people comment that raw data entry on Palm devices is slow and frustrating... I know I used to think that was true.
I'm one of the people that has picked up the Graffiti alphabet effortlessly. Still, entering more than occasional small bits of info was still annoying due to the postage stamp of Graffiti area, and the fact that my hands tend to cramp easily.
I have installed a very small utility called 'newpen' that simplifies my GTD management enormously. It allows me (when it's toggled on) to write on the entire screen as if it were the Graffiti area. When toggled off, it returns the touchscreen to its normal behavior.
Since I can already write Graffiti very well, I can now write Graffiti as easily and quickly as if I were writing on paper. I keep my primary GTD info in a manually-sorted multi-category Memo Pad as a sort of Palm version of a Hipster PDA (yeah, I kow how goofy that sounds .
This combination of simple tools means that I _can_ use my Palm as my collection device. And my list keeper. And my review tool. Big, big win and labor-saver for me.
* It is not perfect: in particular, it can corrupt the screen in the process of selecting a Find result, needing a toggle off - toggle on to repaint things.
* If you don't normally use or like Graffiti that much, you may or may not care about this - if it might help, I'm glad to mention it, or feel free to ignore me completely