I had an interview in-person at a Career Fair in November 2015. I had applied for an pre-scheduled interview with them and got an interview invite. No phone screening was required. They sent me a lot of materials to study prior the interview, related to FB products mostly. The interview was quite challenging but still a nice situation, as the interviewer was very friendly. The minus side would definitely be lack of follow-up: they told me they'd inform me of their decision in about two weeks, but I never heard back.