My opinion (and only my opinion) : I'm ok to block someone for a private game with me, or for a private message to me. I don't agree to block or to be blocked on discussion boards. I want to be able to defend myself if someone says something wrong about me. Anyway, if the discussion was wrong about me and if I couldn't see it, I'm sure that my friends told me or made a copy for me about what it said. So, I'm sure that the idea to block on a public board isn't efficient. Furthermore, it would be also very complicated for the boards of team games or boards of ponds where everyone can say something. Also : I am always respectful with people on public boards so I have no problem. I think that the real problem is the respect for others.