The iPhone 4S' Siri integration may be a potential game changer, but she's not quite the world traveler some of us would like her to be. In fact, it seems she's as lost outside of US borders as any unprepared tourist. Looking for a pub in London? Better find a traditional map. Need to know the time of day in Canada? Siri admits she has no idea, go buy a watch. Business search (via Yelp),
