Godwin's Law: the Nazis are coming!

During a discussion course my freshman year of college, called "Great Conversation," there would almost inevitably be a reference to Nazis at some point during the discussions or random debates. There was also general consensus that the use of such an analogy was almost always out of context or used hyperbole, rendering the original topic pretty well moot.

Today I learned (from the Wall Street Journal, of all places) that this phenomenon has been codified into a law, Godwin's Law, which states:

As an online discussion grows longer, the probability of a comparison involving Nazis or Hitler approaches one. (strikethrough mine)

I'm pleased to note that in a quick search of this blog, the terms "Nazi" and "Hitler" give zero hits, though admittedly this is often a "discussion" of one...