Property managers using Flipkey have three business models to choose from: pay per lead, pay an annual subscription fee for an unlimited quantity of leads, or pay a commission per confirmed booking.

Last fall, my wife and I used TripAdvisor to find a rental condo for a trip to Manila. We chose one that looked excellent in the photos and were directed to FlipKey, which books TripAdvisor’s vacation ...

TripAdvisor isn't exactly a wild-eyed daredevil, but the fastest growing category on its Flipkey accommodation site is apartment rentals, a category that flirts with illegality in large, urban markets ...