Applied online without any contacts inside FB, contacted 4 weeks later via email by a recruiter to set up a phone interview/screening. Call lasted 30 minutes, basic behavioral questions. Contacted 2 weeks later by recruiter to set up follow-up interview with someone on Risk team.
Within the week had phone interview with head of Risk Credits team. As others have noted, you can tell you're on speaker and throughout the interview you can hear others who are mumbling things about what you're saying and what to ask you next. Started with basic walk through of resume and a few situational questions about past experiences, then ended with risk-specific questions. One of the questions was about putting yourself in the "bad guy's" position and explaining how you commit online fraud.
Overall interview was a decent experience, I prepared too much for typical behavioral questions and not enough for risk-specific questions. I botched one of the questions and the girl's tone of voice changed drastically and I didn't need the email in a week to realize I wasn't getting invited for an on-site interview-just a lack of professionalism. I'm sure it is a wonderful place to work though.