I applied online, got two in-person interviews on my college campus (both were purely coding interviews), then went into host-selection, where I had three phone interviews with potential hosts who told me about their work and asked a bit about my past projects. I got an offer from one of the hosts, but don't know whether the others would have selected me.
Interview questions [1]
Question 1
They are very, very thorough. Be prepared to pull out your old data-structures and algorithms book for this one. Some of the interviewers are cool, some are hard-lined. But you'll get to interview with 4 different people so it'll run the gamut. Even if you're really good there's no guarantee as they have so much churn.