'Greatest Arcade in the Universe' open for business in Pittsburgh (1 weekend only) | TribLIVEhttp://triblive.com/aande/moreaande/12527368-74/greatest-arcade-in-the-universe-open-for-business-in-pittsburgh-1-weekendA few years ago, the bookstore and the record store seemed to be consigned to the scrap-heap of history, as rapidly emptying emporia of obsolete …