I have a feeling their beta experience hosts will be their cream of the crop. Once the general public starts hosting experiences, and Airbnb's quality control falters, we'll see a lot of complaints about shitty or scamful experiences.

That's what people thought about sleeping in strangers' apartments, but it turns out that reputation systems do a pretty decent job of culling bad experiences. "Don't get in a car with strangers" used to be common sense, but now people do it every day.