Amazon today unveiled a textbook rental service for the company's Kindle e-reader. Students can rent e-textbooks for as few as 30 days and extend rental periods in one-day increments.
A key feature is you can keep annotations and highlighting after the rental period ends. The notes are stored in the Amazon cloud and can be automatically synced if you re-rent a textbook. The amount of storable highlighting allowed is determined by the individual publishers, according to an Amazon spokesperson.