i was playin today, as always :) and i came across this harmonic thing. It sounds kinda like a pinch harmonic, and you don't have to move your right hand if you move your left. they way i did it, i was picking close to the neck, using the bridge pickup (i have a jackson rhoads, by the way), had plenty o' distortion, and my pinky on my picking hand was just barely touching the string. If you can somehow get a close up of the neck pickup on a rhoads, itll be easier to explain where my pinkie was. IT was at about where the 28th fret would be, right above the bridge side of the neck pickup (over the actual pickup). So my pinky would create a harmonic that rang for ages. im not sure if this is what you're refering to as artificial harmonics or not, just thought i would share it with you.