Restoration of the Ettiquette section

I replaced it with a link now so it's sourced.  And I understand the original research concerns, but it's a news flash to me that going "number two" is "original research."  It would be nice if a few things that were within the universal modern human experience, such as that the sky is blue, the world is round, and that people courtesy flush, could be accept with the wikipedia equivalent of judicial notice, without people busting balls over policy to a truly ridiculous degree.  Now, if you'll excuse me, I have to conduct some more "original research" into the subject matter of this article.