Booking.com seems to take this a step further by including unavailable hotel rooms in search results with a "sold out, just missed it" label superimposed over them. That's pretty much the height of absurdity. It's the online equivalent of a used car salesman. It's really a gross experience. Booking.com unfortunately seems to have a lock on booking in Europe. I would be interested in hearing if and how folks are booking rooms in Europe without them.