We have a detailed, formal Terms of Service (TOS) posted separately, and that TOS is what you will be held to as a member here. It's long and detailed because it has to be in the world we live in, and you are expected to read it, understand it and abide by it. However, we can sum it up as follows:
1) Be a decent human being;
2) Treat your fellow posters as the decent human beings they are;
3) Keep in mind that whatever you post will likely live on forever, so think before you press "Submit Reply".
4) It's a big world. People will disagree with you. You will disagree with them. This can be done with respect, and that's what we expect.