Specifically I'm thinking about the lectures/talks. With YouTube those can all be recorded and put online for everyone to watch at their lecture and probably be better absorbed. How useful is it really to go there in person to watch it? You can argue that you can ask questions but you can do the same in email and on forums. I think they should just forego the lecture and just make people watch the video night before just have a quick overview and just go into a question and answer session. But I mostly think its only real purpose is on a social basis to meet people in person and make contacts.