Vox has some good blog rules:

You will be addressed in the style you choose...

You are expected to back up your assertions...

This is not a democracy...

Members of my family are not [fair game]...

I don't expect everyone to agree with me on everything... [G]iven my oft-stated belief that most people are idiots, it would greatly concern me if they did.

There's one particular phrase in Vox's rules I want to emphasize, for it contains great truth:

Most people are idiots.
Most people are idiots.
Most people are idiots.

Of course, everyone looks like an idiot every now and again. No, the idiots I mean are those who are well practiced at being idiots. On the stupid scale, they easily score below 30 (e.g., the "brights") and more likely below 20, be they believers or un-.