Q: What do you do with your books after you are done reading them?
Well, I return the ones I borrowed from the library to them. If I like something enough to buy it, I generally keep it. But now and then I do go through my books and weed out the ones I don't want to keep any more. Generally, I bookmooch those.
As for ebooks, I guess it depends on whether I liked the book or not. If I don't, then it can get deleted.