Web browsers and wordprocessing software may only display landscape orientation. High-resolution display makes reading easier. Reading speed on computers slows below 72 dpi. REB 1200 has a resolution of 97.3 dpi. Microsoft Reader on Pocket PCs and Franklin's eBookman improves resolution with programming called ClearType .
Bigger pages speed reading.
The screens of Palm Pilots and Pocket PCs are much smaller. However, the reading area of Franklin's eBookman is about one-third larger than most PDAs. Readers prefer lightweight books, e.g., paperbacks over hardbacks. I prefer reading the poor screen on my Palm Pilot over reading on a Rocket eBook because the Palm Pilot is much lighter. Much weight of e-book readers is in the batteries.