I think Amazon did rather badly on 1984, but they say they won't do it again. It's a definite disadvantage of e-books that something like that can be done.

I read probably more than 150 books a year, a lot of them on trains or planes or in station waiting rooms or departure or transit lounges at airports. In a typical year between 5 and 10 of them will be technical (CS or IT or Maths). Maybe two dozen will be other non-fiction. The rest will be fiction. Almost all in English, but some French and some Gaidhlig; and I decided I really should learn to handle Spanish properly so right now I'm struggling with El Pais del Fin del Mundo (Pratchett is probably not the best place to start on a language, but ...) and as I intend to spend most of my time around 29°00' north, 13°40' west from now on (can't stand the British climate) the amount of Spanish reading will rise and the English will drop. There's some Latin poetry on my shelves still but I find I mostly can't follow it any more - except Catullus, which is easy because I love his stuff so. I haven't any sort of e-book reader.