I hate to be go all happy family on you, but please avoid
swear words in a public forum like hacker news. There are enough forums where that sort of behaviour is a part of the culture and it degrades everyone.
I would assume that discouraging people from speaking their minds the way they feel like to is more harmful to a community than having to tolerate the occasional cuss word.
I know this is just a plea of yours, not an order, but it still comes across as patronizing to me. If you hate going all happy family on someone, don't do it. It will achieve nothing but aggravate them.