The thing about a neg is, the name sucks! It should just be called a disqualifer. But there is another concept, a tease. Now teases are very powerful, as they raise the value of rewards. Think of it like this "Your eyes are so beautiful", it has almost no value, but "You make the weirdest look when you are thinking! There it is! But its ok because your eyes are so beautiful". See the difference? Lets call that a tease, it raises a value of a reward, and you reward when she does something that you like, so this is all part of the training her to work for you and do exactly what you want cycle.
As far as negs, I agree, active dis interestest is easy enough in most cases. When the hottie starts talking, I check out my watch, or walk away mid sentence to look at something and then come back. She will get annoyed and actually start projecting her voice in your direction. This is where you can start the BHRR cycle with her, this is where you would actually tease her.
Good post, I am going to rep all over you face.
edit: When I first started pick up, I was the worst to do this, so here is a story, I had just finished reading the mystery method, and so we were at a bar with friends and the hot waitress comes up with the drinks, I was drunk, because newbies always want to get drunk to get over aa, let me say this 100 time over, just drink water.
Me: (to the waitress) Do you like working here?
Her: Yea!
Me: BullSh1t! I bet you wish you had finished high school now!
Her: (Walks away quickly!!!)
Me: (to the table, loudly) I am so going to be farking her tonight! (everyone in the bar heard this).
LOL! Wow, I totally misunderstood the theory.