Keeper of the Superfluous Es!

I've been on the receiving end several times of having fics of mine coped and archived without my permission - once or twice with my name removed. I know how I felt about it - bloody angry. I can understand how people might see little harm in taking a publicity photo that's been made into an icon, but I cannot get my head around copying a piece of original art, making an icon out of it, then using it for every chapter of a multi-chaptered fic and only asking who the artist might be AFTER the fic has completed posting.