Think tripadvisor.com specifically aimed at the dive community.Vendors and operators (dive shops, charter operators, resorts, instructors, training facilities, accommodation providers etc etc) could set up their own home page as part of DiveBoard and advertise their services, rates, contact details, maps etc. Users could then provide their own feedback on the facilities and personal experiences and rate the service with stars. These would then aggregate and give the operator an average rating which would encourage excellence and also assist divers find the good services and operators.