We don’t allow curse words because we have some kids from schools (and probably others) enjoying our forum as well. And is it really a problem to use something else instead of a curse? And we don’t threat people to ban them when they do. Most of the time we just edit them out, send a PM or people remove them themselves. Only in cases where people curse intentionally to other members or to us as mods we might give out a warning or start thinking about a ban.
As explained, the topic with the open letter had something that could be interpreted as an effort to extort or blackmail. It is a legal issue between 2 parties and although it was about a website about SAFE, it has nothing to do with the project, our community, or Maidsafe. And even if it had, we don’t allow blackmailing and/or extortion.