Know Any HSP's?

A friend sent me this link on HSP's (Highly Sensitive Persons). I have known one or two such persons and I am trying to whether I can independently corroborate the stuff mentioned in this site.

This article made me curious.

Another interesting article here.

Notes:

• The character Kincaid comes across to me as a ISFP as per Myers-Briggs personality types.
• Jane (a friend): ESFP. A person who would accept far more and understand very little. Such people love to live in what I call glorious ambiguity and snatch ambiguity from the jaws of clarity.
• Guruji (a friend): ESTP. A person who accepts (i.e., tolerates) less and understand more.
• I:  INTJ. A person who would understand far more and accept very little. I dislike ambiguity and would create jump to a conclusion which would give me clarity (though incorrectly many a times).

I keep getting confused between Intuition (I) and Sensing (S) and often think a person is initially one of I/S and then shake my head and decide it's the other. Did I classify correctly this time? 

Additional reading: 

• http://en.wikipedia.org/wiki/Highly_sensitive_person.
• http://vbala99.blogspot.com/2012/04/am-i-narcissist.html
• http://vbala99.blogspot.in/2010/09/big-five-personality-test.html
• http://vbala99.blogspot.com/2012/01/predicting-relationship-success.html