This research report summarizes the work undertaken by Consumer WebWatch, which launched an extensive examination of hotel booking sites. Several of the leading integrated competitors were analyzed in controlled, real-time, head-to-head testing, in order to determine which Web sites offered the most thorough displays and lowest rates. The sites tested were Expedia, Hotels.com, Lodging.com, Orbitz, and Travelocity, as well as several branded Web sites maintained by national hotel chains. The testing was benchmarked with Sabre, the leading global distribution system (GDS) used by travel agencies in the U.S.