To those invited: Did you guys contact your interviewers by phone or by email? Do they prefer to be contacted by phone or email?
Others, please feel free to express your opinions. I heard Stanford interviews are pretty casual and conversational. I usually prefer to call people and say hello. I got an invite last week, but it seems that my interviewer is quite busy and replies my email with only a few words. In such a context, is it still a good idea to call and say hello?