I imagine it something like this: speak in the forum the way you would speak to your boss at work. Yes, you're free to tell your boss what you think but you would be well-advised to not swear, not be insulting, not raise your voice, not rant and rave about things that cannot and will not change... Am I on the right track here?? It doesn't have to be boring tea party talk, but keep it polite and mature.