Well, okay, it's probably more formally referred to as Wil Wheaton's First Rule of the Internet, but it counts for W either way, so...deal with it.
If you don't know who Wil Wheaton is, you have got some 'splainin' to do, Lucy. Surely you remember this:
Wil is not just a self-proclaimed nerd, he actually is one. But the best kind. I'd highly recommend following him on Twitter.
Wil's First Rule of the Internet applies not only to life on-line, but to life in general. And it's not just writer-specific, it's good for everyone.
And so now, I bestow on you, some true words to live by. Wil Wheaton's First Rule of the Internet:
Don't be a dick.