Is it acceptable to donate a book with stamps? I'm not talking about "little free library" stamps or "no resale" stamps or any variation of that. Every time I finish a book, I stamp it with "From the library of (my name)". Some of them have these stamps, some have additional info like how many stars I rate it and what I think of it, my favorite quote from it, and highlighted/annotated pages. It is not entirely "defaced" to the point where it's unreadable.