E-reader: is it prepared for the 21st Century?

I have been interested in the E-reader devices (Kindle, Sony, Apple Ipad) but not having used one, wondered whether it would be suitable for school or study use.  These  are the new books of the 21st century but are they equipped for scholarly needs? The E-reader has been described as suitable as tools if used for reading for pleasure but not suitable for academic use.  If you are interested in in-ebooks and e-readers, you may Kerrie Smith’s presentation on e-books, the state of play, barriers and challenges of interest as well as a talk by James J. O’Donnell,  Professor of Classics at Georgetown University regarding his view of the e-reader from an academic use perspective: scholar gets a kindle and starts to read.