Surely the projections cited in this article aren't accurate.

> Already operating in 191 countries and 34,000 cities, analysts at financial services company Cowen & Co predict that, by 2020, Airbnb hosts will be taking 500 million bookings a night, rising to a staggering one billion by 2025.

If the population of the world is about 8.2 billion in 2025, which is the UN's expectation [0], that'd mean one Airbnb booking a night per eight humans on Earth. Perhaps they mean yearly, not nightly?

[0] http://www.unfpa.org/news/world-population-increase-one-bill...