Check this out: A web site that was used to try to find a missing sailor in the Pacific off the coast of San Francisco, and now being used to try to find the missing pilot, Steve Fossett. http://www.mturk.com/mturk/preview?groupId=9TSZK4G35XEZJZG21T60 Somehow these people get access to satellite photos. Not sure how, but if they can then surely the massively-well-connected and well-funded McCanns could. These cases are a little different because you're looking for something big -- a sailboat or an airplane -- not a person or disturbed ground. Still ... I think this would be a good approach because there would be THOUSANDS of people willing to take part. Which raises the question: "Do the McCanns WANT thousands of people helping them find their daughter ...." Thoughts?