Used bookstores should come in at least two kinds. There are the ones big enough that the books reach a critical mass and bend spacetime around themselves so that it turns into a weird labyrinth of literature. Then there are the ones small enough to fit in your pocket, with really excellent and totally useless books and nothing in between, run by weird people out of a hole in the wall that you can't believe will stick around for more than a month. The Book Zoo is the latter, carrying mainly books you can't believe exist, and run with intense quirky independence. My favorite thing about them: they stamp all their dollar bills with "Book Zoo: Used, Out of Print, Buy. Sell, Trade"" and their address, and when you get those dollars as change and bring them back to spend there they are worth TWO dollars each. It is so awesome! and such a brilliant publicity idea. I have two sitting on my desk right now - that's four dollars at the Book Zoo, enough to buy a whole book or maybe two!