House Exchange

I was watching "Holiday" last night. In this movie, the 2 actresses decided to do a house exchange. That means, they both took a holiday to each other's country and stayed at each other's house. It turned out that both found the vacation they were looking for. Would you do a house exchange to someone you don't know? It sounds like an interesting concept but the stakes are a bit too high isn't it? Though you are on holiday, half the time you would be worried about what will happen to your house! I don't know but I would not choose such a vacation style...would you?