Hello there. I am interested in this conversation because I, too, use my Sony (PRS-650) to read academic material, highlight portions of texts and cite references.
SeaBookGuy covers all the basics: if your file is a PDF, then the page numbers on the printed copy will be preserved.
But, if I may be so forward, how do you plan on "replacing" the paper editions of your books and relying entirely on e-books, varlokkur? Will you personally be digitizing your entire printed library? If so, I'd be curious to know how to do that.
Or did you mean that you will be relying on e-books
from now on?
I only ask this because, it seems to me, the whole digital era has come to challenge the idea of exact page references. A "page" is a paper medium for printed communication. It is a relative measure. Books that are published directly in digital form, for example, have no need of page numbers: they are strings of text only.
I guess what I'm suggesting is that, yes, one should cite an exact page reference when possible. But, also, it might be time that academics stop slaving over such miniscule and menial tasks as collating page references. People can, after all, just search for the key word now...
Just a thought. Thanks for listening!