I feel enormous sympathy for Madeleine and the twins but not for the parents, they had choices and they could have taken the children with them and let them sleep in buggies, pooled all the kids in one apartment and eaten in the same apartment, used a listening device, I mean how much would it have cost to buy 2 really cheap mobiles (carphone warehouse sell them for £3) get a portual based sim card and left it on, stayed in.
If you want the single life, don't have kids.
Using a listening service is really it's a bit like throwing your kids in a pool and saying "Oh, well there's a life guard on duty", he might get to the kids in time but who's responsibilty is it?
I really don't understand why when people are on holiday they do things they wouldn't (well they might do for all I know) do if they were at home. The Mccanns have done a grand job of milking the sympathetic public through their mistake and now think everyone should be looking for THEIR daughter because they did not because they were too busy in the pub.