For me, it's a revolution just because it's the first product that has reached a critical mass point to make me less likely to use my laptop. I make my living from my laptop, and I'm kind of anchored to it, which affects my daily lifestyle. The iPhone reduces my need to open my laptop by about 60%. This changes my lifestyle dramatically. It's actually a bit traumatic (in a positive sense) and I haven't completely adjusted to it. I'm actually considering traveling more, taking more working vacations, taking up running... I don't know, it's like it has made *me* more portable without me having to discipline myself to be as such. The impact is difficult to measure.