There is now a cottage industry of short-term-rental start-ups, whether started before or after Airbnb. The category includes dozens of other companies: Roomorama, Love Home Swap, Stay Al­fred, and many more. Some were scooped up by the travel industry’s giants—TripAdvisor’s FlipKey and HouseTrip, Priceline’s — and in the fall of 2015, Expedia paid $3.9 billion for industry veteran HomeAway and its 1.2 million–plus properties listed. Some new entrants are starting to offer their own twist on the concept, evidence of the kind of segmentation that starts to happen when a bold new idea becomes more established. Get the full story at