Thanks for revealing this "multi-touch with one hand" secret. I tried to demo this with N810 (just as a mock-up device, obviously not multi-touch capable), but found it pretty difficult. The index and middle finger aren't very flexible (at least mine...). There are only some certain areas on the screen you can reach with reasonable difficulty. The bottom part of the screen is almost completely covered with the hand/fingers. If you need visibility to the bottom part of the screen, then this method is not very useful.