I don't see how trolling can be stopped. Anyone can add a reply to a new discussion and since the reply can be anything, then trolling is easy and there is no d

I don't see how trolling can be stopped. Anyone can add a reply to a new discussion and since the reply can be anything, then trolling is easy and there is no dissuasive pressure on it. What I feel is missing is the possibility to down-vote messages or something like that.