Have been following this all in one hit this morning at work... A couple of things.
1/ Nitrous Oxide adds power by introducing lots more oxygen to combust in the combustion chamber (funny that). A pleasant side effect of using it is that it can cool the intake charge as well (** This is NOT anything like the main reason why most people use it**)
2/ It is not "fake h.p." OR "cheating" full farken stop. It is a form of forced induction. Get it? No? Okay then.... What does a turbo charger do? What does a Supercharger do? Get it now?!?!? If not, simply re-read point one.
3/ WOT is the only time that Nitrous Oxide should be employed in the application being discussed for a whole host of reasons including what Andrew said.
4/ When all you little kiddies grow up, buy cars, modify them and then grow a brain allowing more than one simultaneous idea to occupy it, let us all know. Until then, please contribute, ask questions and the like but refrain from adding your two cents when what you're saying isn't worth nearly that much.
Remember, it is better to appear ignorant and say nothing than to open your mouth and remove all doubt.
**** DISCLAIMER ****
I base all of my knowledge on this subject from what I have gleaned from association with Robbie Madden from my home town of Wollongong. He's been the Nitrous-guy longer than most of us have been alive.
Adrian