I did receive that link a couple weeks ago and have been reading it and you are right in that the salesmen follow it step by step.
Afterall, they do go to school to learn how to negotiate the deal and they practice it on a daily basis and constantly review their tactics while Joe new car buyer just does it once every few years.
The site is very helpful.
One thing to keep in mind is that no matter how much you like the salesman, no matter how friendly he is, no matter how much you think he's trying to help you, don't ever trust him.
That's good advice when dealing with any known con man.
Jake