Tim Bray tweets today: "I have high hopes for the about-to-arrive 7" Honeycomb tablets. The original Galaxy Tab remains my face Android device to this day." I have different hopes. I would really like to see 5-inch tablets, which probably means Android and not Apple (although I would be thrilled with the latter). 3-inch tablets like the iPod Touch do not show enough text on the screen to be reasonably useful to me with my middle-aged eyes. 7-inch tablets are too difficult to carry around: there are no pockets that big.
5-inch tablets seem like a sweet spot on the readability-portability scale. The glass is cheap to make (it's one of the standard sizes for GPS units) and they fit in pants pockets. I would not want one as the thing I read books on all the time, but I would certainly appreciate spending a few hundred dollars less than for the 7-inch and 10-inch tablets on something that is used for occasional entertainment and mobile web browsing.