How to post about Nazis and get away with it:

The Godwin’s Law FAQ: One of the most famous pieces of Usenet trivia out there is “if you mention Hitler or Nazis in a post, you’ve automatically ended whatever discussion you were taking part in”. Known as Godwin’s Law, this rule of Usenet has a long and sordid history on the network – and is absolutely wrong. This FAQ is an attempt to set straight as much of the history and meaning of Godwin’s Law as possible, and hopefully encourage users to invoke it a bit more sparingly. Of course, knowing Usenet, it won’t do an ounce of good… Rebecca Blood brought my attention to Godwin’s Law and discusses some of its implications here.