I think is a brilliant idea (in the UK we stayed at places more than once where families had moved out for the summer etc - sometimes to a caravan in the garden (when we stayed on a farm)). I really like the idea - I hate it when you go to holiday places out of season and see all these beautiful houses sitting empty - so think is great when people either live there and move out to allow holiday makers in, or just rent out their own holiday homes when they are not there.