I'm surprised I haven't heard of this service before. The discovery comes unfortunately after a large pruning of my physical book collection, but I can't wait to try this out when I get home on the remainder.<p>The requirement of writing your name on the copyright page is reasonable to prevent multiple people from claiming the same ebook, but for my use case, I would like to sell/donate the physical book (i.e. recover the physical space currently occupied by the book), and I feel awkward doing that with a book that has been inscribed to myself.