Thanks Azrael. I was trying to describe that in my post under type 3, but looking at it, I described it pretty confusingly (is that a word?). I should have separated it into two different types of harmonics.

On a side note, I just signed up with this site and I really think that it is a great place for guitarists to share tips and advice. Very useful and helpful; I just wish I had found it earlier. This place rocks!