I don't use Facebook, so it's hard for me to define whether what people do on there is considered normal and acceptable. For example: is it considered a normal part of Facebook etiquette to publish pictures of people (not celebrities, just regular people) without asking for their permission? I have discovered, for example, that there is a person who has declared in international search for me and is posting my pictures and asking people if they know where I am. To me that seems to be in horribly bad taste. For one, I'm not on Facebook, so I don't have a way of knowing what has been posted and actually looking at those pictures. I also never gave any permission for my photos to be put up there. Or anywhere for that matter. And, of course, if I made myself hard for that particular person to find, it might be that I'm not interested in being found by them.
I'd never post photos of people on my blog without their explicit consent, and it seems weird to me that anybody would do such a thing on Facebook or elsewhere. Especially if it's a social medium that is closed to anybody who is not a member. But is it considered a normal practice on Facebook, though? If there are Facebook users among my readers, do you do this? Am I being an old-fashioned fuddy-duddy in my rejection of such practices?