Here's my little related story. I was in one of my fave used book stores (Baldwin's Book Barn in West Chester, PA) which is not exactly close to where I was living at the time. After browsing for an hour or so and picking out a few books, I spied a title on a top shelf that I thought was interesting but couldn't remember ever seeing before. I pulled the book down and began perusing it, and on the inside cover there was a familiar-looking stamped bookplate that said "Property of <My Name>." I was a little freaked out because I couldn't remember ever owning the book. After thinking about it a few minutes, I dimly recalled lending the book to somebody years ago and I guess it was never returned to me. When I went downstairs to the checkout counter, I showed the older man working that day my ID and the bookplate while telling my story, saying I never got a chance to read this book. He very kindly told me to just take the book and didn't charge me for it, saying "I'm just glad it found its way back to you."