Quote Originally Posted by Ice
http://en.wikipedia.org/wiki/Godwin's_law

"As an online discussion grows longer, the probability of a comparison involving Nazis or Hitler approaches one. ”

—Mike Godwin <godwin@eff.org>
I've just realised that Godwin's law doesn't really explain anything. If a thread went to infinity it would have every kind of conversation in it. So as a thread grows the probability of any statement being made approaches one.

ie
"As an online discussion grows longer, the probability of a comparison involving Rome approaches one. ”

"As an online discussion grows longer, the probability of a comparison involving Spongebob Squarepants approaches one. ”

"As an online discussion grows longer, the probability of a comparison involving Octosquids approaches one. ”