Press for Airbnb

Travelers have used Airbnb to book a total of five million guest nights in the past four years, staying in spare bedrooms and empty homes around the world.

Even more impressive is that a majority of those bookings — four million — occurred in 2011 alone, according to the San Francisco vacation-rentals company.

Today, the start-up provided a number of metrics for how the company performed last year, and in the months since it raised $112 million, which valued the company at more than $1 billion.

Brian Chesky, co-founder and CEO of Airbnb, took the stage this afternoon at the DLD Conference in Germany for a keynote covering his views about the ‘sharing economy’.

 NBC Nightly News segment featuring Airbnb which covers how in down economy, sharing takes off.

After about a year of being iPhone only, the Airbnb app comes to Android this morning alongside a complete revamp of the Airbnb mobile features.