Something like 2-3% of Hillary book buyers actually finished the book.
That raises an interesting digital privacy beef.
DRM should not enjoy any legal protection!
Provided that that type of information (tracking how much of a book is actually read) is anonymized, I wouldn’t have any trouble with it. The problem, of course, is that it very likely isn’t. I have a nook account for those rare times I buy books from them. The first thing I do when I download a new book that I buy through it is to strip the encryption off of it so I can read it elsewhere.
I buy most of my fiction from Baen (baen.com). They don’t do DRM, and make their books available in just about every format you can imagine.