Hotels Combined is surely currently the best online hotel booking system available. Hotels Combined offers an aggregation service, whereby it compares prices between 30 other hotel booking sites, ensuring the best deal is found. If you are already an affiliate of a hotel booking system, the chances are you can add that relationship to Hotels Combined. Commissions are paid by referrals with 70% of revenue generated by your visitors.

Sign up here: Hotels Combined

An example of the Hotels Combined system running can be found at Chiang Mai Plan