Wrong again, Internet!

Wrong again, Internet!  Did you know that pissing on a wound (to clean it out!) is advice you can find on the Internet?  I didn't, but some quick googling provides proof.  I have heard people tell me that urine was sterile, but I knew that to be wrong from my own adventures with a microscope as a kid (it's easy to see the bacteria in urine).  I didn't know the rest of the story, though...