Sometimes the Web is a glorious, glorious waste of time. Take, for example, the Invisible Library. It’s a site dedicated to books that exist only inside other books. Or, as explained on the homepage: books “unwritten, unread, unpublished, and unfound.” Favorites therein include make-believe books mentioned as set pieces in other works, like Necronomicon, made famous by H.P. Lovecraft and the Evil Dead movies, and The Unabridged Princess Bride by S. Morgenstern. Author William Goldman invented the existence of the S. Morgenstern tome, then “abridged” it into his published book The Princess Bride. To this day, many readers don’t realize that the “unabridged” version never existed. —Martha Harbison