Hello guys and perhaps girls, I joined your site some days ago and finally got the courage to say hello. Everyone is so knowledgable! Im a youngster teenager with designs on obtaining a PHD in some area of theoretical physics. And hope to someday understand string theory. I do not quite understand the heirachy of this forum, what is a science adviser or savy, super mentor and homework helper? Do Mentors get moderative powers or just cool icons? And finally, does Dr Michio Kaku's forum actaully get traffic?