I really commend this post, I strongly believe in getting this kind of information out to addicts, instead of a vague "it's bad for your body", because we already know that, but having detailed information like this can save lives.
I'm also an avid advocate of pill abusers separating the acetaminophen out from the opiate in the pills, it minimizes damage to your body considerably and can prevent the vast majority, if not all acetaminophen overdoses related to pill abuse. Knowledge is priceless, every addict should educate themselves as best they can.