Okay, where are all the UFO pictures? And the UFO videos? In recent years, the world has exploded with photographic and video equipment. There are about 5 billion cellphones in circulation throughout the world -- many, if not most, equipped with still and/or video cameras. (The number of mobile broadband subscriptions will probably top a billion globally this year.) And there are millions, if not billions, of easy-to-use video cameras in circulation, as well as billions of still-picture cameras. Essentially, billions of people are able to snap or otherwise shoot the least bit interesting thing that happens at a moment's...