It’s the indicator of when the last reader ended the book – Dog-eared the page and never picked it up again. Greater insight than any Amazon review can give you.
I started reading a book today, eye-rolled at the introduction and then was completely vindicated by seeing page 1 of chapter 1 dog-eared.
Normally it’s not so quick…but it does give me pause when I see a dog-eared page halfway through a book. Should I quit? Thoughts, from you library-using readers?