Ross Rubin (@rossrubin) contributes Switched On, a column about consumer technology.
Amazon's Kindle DX includes a few tweaks such as automatically rotating the orientation of the screen when it is placed in landscape mode and adjustable page margins because well, CEO Jeff Bezos seems to like the feature. Literally, though, the biggest change is the new 9.7-inch electronic ink screen, which displays two and a half times more content than the 6-inch screen on the Kindle 2 and Sony Reader. The expanded display allows more detailed graphics to be seen without zooming or panning, and is better suited to a wide range o
