Apart from what has already been said, Just Network does not want to push anything on you that you don't want to do.
no membership
no obligation
no speed networking
no standing on stage for 5 mins (unless you feel the need to, but please ask first!)
come and go as you please
All in all very informal, how ever you feel comfortable, but very much open to new ideas if they are brought forward, willing to give anything a go, you got to be, 'your mind is like a parachute, it works best when open.'