I'd much rather see people fostering pets, but in the grand scheme of things, this isn't so bad. Really, how many people out there want a pet, but aren't in a really good situation for whatever reason. Instead of doing a not so smart thing and getting the pet anyway, and then having to rehome it 2 months later where it ends up in a shelter, they get to spend their time with an animal and have somewhere safe for it to go when they no longer can care for it.
There are hotels where you can "borrow" their resident dog to take a walk or go jogging with, so this really isn't so far fetched.
I'm not saying this is ideal, and the newspaper add posted is pretty... icky feeling. But not the worst idea in the world. Definitely not as bad as the laundry machines for dogs and cats we were all complaining about a while back.