I recently signed up on goodreads and went and rated a bunch of books I have read to improve the suggestions. It's been fun using the app, as I keep recalling books I've read and they bring up fond memories. My girlfriend was impressed that I could remember what month and year I read books even over a decade ago. But as I saw the title and cover I could recall where I was when I read it. Many were on airplanes so I associated them with the trips and those were some of the easiest to recall.
