A study by Princeton University claims that devices like Amazon's Kindle make reading too easy. The typeface is so easy to read say the researchers that it is harder to remember what you've read than when the same information is presented in odd typefaces that require more effort to read.
Not convinced? Try reading the two paragraphs below.
Remembering what book you are reading given the abscence of a book jacket is more of a problem, according to Amazon's Kindle forum, and not solved by a Kindle case illustrated with your favourite book jacket.