Cowman, I think you are refering to natural harmonics used in rock playing with high distortion.

Yes, there are natural harmonics between the frets, but you won't be able to hear them unless you're playing with some major distortion. For example, on the D string between the 4th and 5th frets, or on the G string between the 2nd and 3rd.

These are natural harmonics. In other words you don't need to worry about touching the string with your thumb when you pick it and all that. Just "fret" the string with your left hand where the natural harmonic is located and pick.

Artificial harmonics are done exactly as stated. By the way, HTF, that's a good idea, practicing them unplugged or clean.