Thanks for posting up this thread - I found it after searching "supernatural" as this is a question that I have been trying to get my head around since my "awakening". I have never had a "supernatural" experience myself. I have been in a few situations with others where they have said they felt creeped out by someone or by the place etc whereas I have been completely oblivious. But I have never been able to discount supposedly demonic experiences from other credible people. Two members of my immediate family have had experiences and they are completely down to earth and, well, I would guess like me - mostly oblivious to these kinds of things. One of the experiences, which happened over a period of weeks, was so terrifying and life threatening that if it wasn't true it would mean the individual concerned was either an outright liar and/or of questionable sanity. The experiences happened years ago, neither of the individuals ever told anyone apart from me (as I was at home at the time and the events apparently happened at home) and neither have ever talked about the events again. They both ordered me not to tell anyone else in case other people thought they were crazy.
My partner who is completely anti-religion said he personally witnessed an event in Brazil (where spiritualism is popular) and now says he can't rule out the possiblility of a spirit world (though he is not the slightest bit interested in it)
Interesting subject - will take a look at the references.
I guess I identify myself as agnostic these days.