It is not booking that does the overbooking, it is the hotels. It doesn't matter that I made the reservation in advance, pre-paid, and spoke to someone at the hotel the day prior to arrival. They probably give away my room to avoid confrontation with someone else who was overbooked. By the time I roll into town, which is usually 1-2am because I like driving at night, the hotel is locked down tight and the clerk is pretty comfortable behind his intercom telling me to sleep in my car because they gave away my room (yeah! they actually said that). So I called booking and 45 minutes later I'm checking into a hotel (they had to call several places and talk to people to find one that actually had a room because the computers kept seeing availabilities even though the hotels were at capacity).