@qgil: I think if you read the use cases in this thread carefully, most of them talks about certain constraint that limits yourself to a one handed use. Either lack of time or lack of additional biologic appendage to deal with extraneous objects around us. Yes, you can blame or argue the person that they shouldn't be doing that in the first place for whatever reason (Ethic, efficiency, etc) but then again people have been doing that already with 99% other phones (and smartphones) that this is what they expect out of N900.

I personally think the N900 has to be heavily marketed as a miniature computer (or anything than a smartphone competitor) to take it away from any comparisons against other (Smart)phones and so that people have different expectation of what kind of interaction experience they will have with this (no one handedness, for one).