I also post a lot on some 'Big Brother' forums, cause I follow the show, and I dont seem to have any problems there with profanity - Even when I am drunk
I always remember to asterix words and stuff, (like P*ss and Sh*t and stuff - When its appropriate to the point I am making) even in posts that I dont really remember making the next morning.
I guess that in the back of my mind, cause its a 'Family TV Show' I know that it could be a youngster who is reading it