Reporters found out from dozens of hotels that their occupancy rates rose 30% to 50%, thanks to the help of group buying service. However, their reservation through Ctrip.com lessened 10% to 30%. The prices for hotel rooms sold in the form of group buying are 30% to 80% lower than usual. In detail, hotels kick off promotion for their rooms on group buying Web sites and pay the latter service charges. Group buying helps hotels for their promotion of rooms during the slack seasons or their opening periods, lifting up their occupancy rates and overall proceeds. Get the full story at Investors.com