Profile of a Sociopath

It never ceases to amaze me even though I have seen the behavior so often.

I spend countless hours helping people because it makes me feel good.
A person with no empathy for others comes along and out of resentment or jealousy or whatever,
destroys what I have tediously built.

It is so sad to see this destructive behavior.
But there is an explanation!
It is simply in their nature.

For those who are unaware, here is a profile of a sociopath:
http://www.mcafee.cc/Bin/sb.html

There is a sociopath on WellVideo.
I have warned many about her but my warnings are not heard by all.
Guess those who do not listen will have to learn the hard way.

also some good advice on dealing with a sociopath:
http://www.decision-making-confidence.com/dealing-with-a-sociopath.html

I did most of the above instinctively:
cutting off contact and warning others.
The hardest part of warning others is not to sound crazy.
I tried, I really tried. but I failed.

I know it is not my fault but I did bring the lion into the den.
I should have known better.

ETA: another very informative article which shows how a sociopath makes the victims think they are making their own decisions:
http://www.decision-making-confidence.com/stop-mind-control.html