OK. Had this debate at work the other day and again with some of the neighbours. I have always left my outside water taps open and shut off the supply inside, for the winter months... There is about a 50 / 50 split on if you leave them shut or open outside. (poll is with 14 friends and co-workers). The others say you leave them closed in case condensation creeps in from the outside. (haha) I have never had an inside water line rupture because of my method.
So.. Does it even matter?
Paul