Of course ebookery has its appeal: especially to women (a 57% bias), who can slip a Kindle in their handbags; to those with poor eyesight who need to make the type size bigger (50% of users are over 50; more than a quarter over 60); to holidaymakers watching their baggage weight; to those who seek out pulp and genre fiction; to readers of dodgy titles, where discretion is the better part of screen anonymity.

50% of ebook reader older than 50? Is it a typo?