I did two phone interviews and then did an on site interview in North Carolina. The first phone interview was a 30 minute behavioral interview with HR. The second phone interview was a 30 minute case study. The nice part was they gave us an example of a case study which was very similar to the real interview question they gave us (formulas with click through rate, etc.); it was mostly questions with website performance. For the final round interview, they pay you to go on site and you have a day of interviews. There is a preinterview dinner where you eat with current employees and the other interview candidates. On the interview day, there is first a tour of their company, then there are three one on one interviews, and finally a group case study. For the one on one interviews, there's one behavioral, one case study that is similar to the phone interview case study, and one that is an open ended case study. For the group case study, they partner you with three other interview candidates and you complete an Excel exercise with each other while an employee watches the group and takes notes. Then a senior manager comes into the room and asks the group some tough questions. I did fine on the one on one interviews but I messed up the group interview since I didn't talk enough. The decisions were made fast; the interview was on Friday and we all heard back the following Monday.