Interview wasn't terribly difficult. A lot of the questions they ask are floating around on the internet, and I had done my research and had prepared answers for a lot of the questions I was asked. The interview was over the phone, and lasted 30 minutes max. The interview was pretty one-sided though, as the interviewer just asks the questions and records your answers, so I would recommend asking questions at the end of the interview to make it a little more personal and a little more of a conversation.