Today was the day of the annual library sale, where the public and school libraries of three counties put all their over-stock books together and sell them at great prices. I'm talking $5 for 3 hardcovers, and $2 for 3 paperbacks (mass market and trade size). For a stingy yet voracious reader like myself, I always go ape-shit crazy at this sale, and I bought a huge load of books for about $25 in…