Okay, there must be something you read that's a guilty pleasure . . . a Harlequin romance stashed under the mattress. A cheesy sci-fi book tucked in the back of the freezer. A celebrity biography, a phoned-in Western . . . something that you'd really rather not be spotted reading. Even just a novel if you're a die-hard non-fiction fan. Come on, confess. We won't hold it against you! - Booking Through Thursday I don't…