Wow. TFA was a fine article, but I followed a link or two, and ended up reading the posted fulltext of My. Penumbra's 24-Hour Bookstore, and that was some Good Reading.
doesn't it sound familiar? apart from the gooey ending and the google twist, i could swear i had read that - a story, with a bookstore, with that meaning and process - before.
[maybe this sounds catty, but if you had to write a pastiche of borges you'd probably come up with this, so perhaps two people simply hit the same idea....]