I went through three phone calls and one round of in person interviews.
First: A screening call with a recruiter - why are you interested in this position, what's your time line, etc. Very pleasant and straight forward
Second: A phone interview with a legal analyst on their team. He was great, very conversational. We discussed some of the challenges facing content heavy online companies and the interaction between policy, law and engineering in internet based companies.
Third: A phone interview with the hiring manager. She seemed primarily concerned with weather the position would be too junior and experience dealing with a ticketing system. She was interested in the ability to quickly learn new systems (have examples ready!), customer service experience, clear, quick communication, and the challenge of sometimes repetitively answering customer issues/tickets.
After these, I went to their SF office for in person interviews. Each interview was half an hour. The first was one on one with the hiring manager, similar questions to those over the phone. Then three interviews with pairs of people from the legal and brand policy teams. They are technically separate but work very closely together. There were a number of forward looking questions... what would you like to do ideally, type of questions. Then there was a final interview with the head of trust and safety.
On the whole, everyone was very pleasant. But they were looking for someone who all of them would like to have a beer with after work. The people I spoke with who had the position came from customer service backgrounds, not policy backgrounds. I doubt that anyone would have met their collective standards (they didn't end up hiring anyone over the next few months :))