Regarding the MaCanns being irresponsible parents for leaving their children alone. Even after all the publicity this case has been given, there are still some parents that have not taken matters onboard.
Two examples of this I have witnessed myself recently. One, I was waiting outside a stores changing room, while my wife tried a dress on, when I saw a little girl running around looking for her parents. (In this day and age one cannot approach a child to offer any aid). Fortunately she was soon to be re-united with her parents, who apparently had been that busy looking through the racks of clothes that they had not noticed their child had wandered off.
In the other example, I had dropped my wife off at the supermarket entrance, while I parked up to wait for her seeing she only wanted a couple of items.
I sat in my car listening to the radio when I noticed in the car by the side of me, a child of about 3 years old standing on the front seat, talking to a much younger child that was in a childs seat in the back. There was no sign of an adult in the car. I was thinking how irresponsible that parent must be to leave children alone in a car , not only from the abduction point of view, but it is not unknown for a vehicle to spontaneously burst into flames. After what was a good few minutes the mother appeared, apparently she must have been to the other side of the car-park to take her trolley back. When will they ever learn?