I applied online. The process took 2 weeks. I interviewed at Airbnb in Sept 2013
Interview
14-15 rounds of interviews seem to be the norm. you get through 4-5 interviews with the senior management and then they do a status check before you meet the functional team heads and HR. Final 2 candidates are sent to the HQ to meet one of the founders.
Interview questions [1]
Question 1
I liked 1 of the questions actually - what would your peers/ex-coworkers say is the biggest misconception about you?
I applied through other source. The process took 6 weeks. I interviewed at Airbnb (Sydney) in Feb 2014
Interview
It was pretty exhaustive - phone based plus in person in Sydney and SF. Good use of technology, very adaptable to time differences and access to senior people.
The check-in process once you have been hired is first class.