Yes, I speak up. I am rather selective about who my Facebook friends are, however, and only accept a request if I think that Facebook would be a good way of keeping in touch with the particular person who sent it. This is why I’m not Facebook friends with my brother, who uses his account for business purposes only. I just pick up the phone if I want to talk to him.
All of this means that I rarely wind up arguing with my actual Facebook friends. More likely, I find myself arguing with their friends after one of them has made some sort of reply to something a friend posted. I have a policy of limiting myself to one Facebook argument a month, however, because people seem to be much more sensitive there than they are elsewhere.
@Fiddle_Playing_Creole_Bastard Surely the question of whether or not arguing in any particular medium is pointless depends on the purpose for which you undertake the argument, yes?