Out of curiosity I installed this on my n800 (just about to attempt a reflash so am not worried about testing) but it doesn't seem to work. It's appears it doesn't fit on the screen the top navigation bar that is; sometimes can get to bookmark manager, and onscreen keyboard seemed to work.

edit - scratch that... I misinterpret the instructional images on the start page, didn't realize you had to drag the controls into view.