What it boils down to, is that MC is such a public place, that specific people could care less about what other people think, as long as they get their point across. (Just like any other public forum of communication.)
However, when you group a bunch of people who know each other (LoT), you get a respectful, well thought-out community that allows for free thinking, and you don't have to worry too much about stepping on toes, and insulting people, because you KNOW your audience. Public forums don't have that.
