Last time I traveled, I found a bunch of the places I saw on Airbnb listed on other sites for cheaper. More alarming, there were significantly more negative reviews on these other sites (even on a site like Booking), than there were on Airbnb.

I'm sure Airbnb will continue to grow, but it seems awfully saturated to me already. I'm amazed at how many listings there are for my neighborhood (in NYC). All these hosts with a dozen locations that they barely maintain. Hard to find verify a host actually cares about a place they rent.