Re: Who's your Teacher?
To me, a teacher or sensei is someone you spend direct time training under. Attending 10 seminars with a shihan would not in my mind qualify that person as being your teacher unless you have established a teaching relationship with him or her. That is, you directly affliate with that teacher and obtain rank advancement. I only identify people I have taken seminars with simply as such. Unless I am part of their organization or attend a whole lot of seminars they wouldn't know me by sight.