Look, I don't have a Facebook page because I have little interest in hearing myself talk about myself any further than I already do in interviews or putting any more about myself online than there already is. But if I wasn't in this position, I'm sure I would use it every day.
I do believe that in order to be a successful negotiator that as a diplomat, you have to be able to put yourself into the other person's shoes. Unless you can understand what is motivating them, you are never going to be able to figure out how to solve a particular problem.

