Well, PDAs have many capabilities to create TXT or HTML files (For example they can download it from internet
) but they have small, difficult to read screen. So pushing interesting text to cybook could be very nice.
Maybe, you could be nice and have a look, how much your connected cybook takes from the usb: connect your device and then in the device manager open the details for the USBhub. There should be a tab dedicated to energy consumption. Something like 100mA, or unfotunately more.