I am sure the shelters that say yes will be involved in which potential homes their dog will visit. Animal Planet has to do this in a responsible way, or they'd have waaaaaaaaaaaaaay too many animal lovers on their back.

And as for the creeps that just want to be on TV, I'm sure you can see right through them and they won't make it to the show anyway.

Its definately not the ideal way to look for a dog, but as I said before, it could be much worse.