One thing Apple does a good job at is screen font clarity on an LCD display. From the tiny display on the iPod nano (3G-5G) all the way to the iMac 27", the display fonts are sharp, really clear, and definitely non-fatiguing for the eyes. 
If Apple replicates that experience with the iPad when reading e-books, they have a winner right there!
If Apple replicates that experience with the iPad when reading e-books, they have a winner right there!