On brilliant, unlike other sites, it is almost impossible to contact other members to know about study material or way of thinking or something similar. I think messaging facility has not been started because then members may share solutions just o get points. But I think there is way to resolve this issue. We can let members post notes on the homepage of other members so that they will be public and hence no solution will be shared as such and this will also make possible to contact other members. I am trying to contact few members on brillint by replying to their comments somewhere but if they ignore those email alerts then there is no way to contact. Can this note posting be made avaiable?