I use it alot, but normally not directed at someone. Might be an odd time where I might say, "Damn you pirates!", but thats in role-play. If anyone is going to take a screenshot, of you, saying damn, and then reporting you for using foul language in a non-RP way, that very fine line that says "this is a game", gets crossed and no longer becomes a game for having fun... :D
And once that line is cross, you'l find that no matter what you say, you may never be SAFE!:P