I try to use profanity rarely in public writings, and then usually to demonstrate a specific point.

Anyone who goes through the trouble of implementing a profanity filter that would prevent them from seeing something I've written is probably someone I wouldn't want to deal with anyway. That is, if a rare cuss word offends their delicate sensibilities, other things I say would likely give them an aneurysm. Ergo, me occasionally cursing may be good for both parties if it keeps me off their radar.