I used Kayak to find a good rate on a hotel in Los Angeles. I was able to book a decent rate and all went well until I had to change a date on the reservation. There is a big disconnect between Kayak and its affiliate getaroom.com Kayak at this time can't update your trip record with anything changed on getaroom.com. Kayak still displays the old cancelled reservation with the title of the new reservation. The information between all these entities is not updated. The problem with a site like this is all the middlemen touching the reservation. Me -> Kayak -> getaroom.com -> Hotel. I had to call the hotel directly to make sure the reservation existed because I didn't have a valid confirmation number from any system.