I for one don't fully believe in ghosts. However coincidentally I have run into a few "odd" (and I'm using the word lightly) occasions. Like we have a basement and in the basement there used to be the computers. We moved them up to make room for the ping pong table, and pool table. Anyway I was using the computers and then the back of my hairs stood up. I quickly turned around and...nothing. Went back to playing games. Suddenly I I felt empty, and cold, very cold. I, being a catholic, started to pray, and the cold left, but not the emptiness. And then it got quiet, like deaf quiet. And I started to here a voice, actually more of a whisper and it was saying "go outside". I had nothing better to do, and the second I walked out my front door I saw the most spectacular sight I had ever seen. And as I looked toward the peeks of the Andes, I saw on the tallest one there were three people. And as the sun reflected off the snow, they were shot up into the air. No noise, no fire, just lifted.
So basically the moral of the story is that maybe it's not a ghost but rather a voice. A voice from God, conscious, coincidence, it doesn't matter, all you have to remember is that everything happens for a purpose. But it's not tied into fate/destiny. Maybe there was a reason you were scratched. Maybe it was because you were meant to get a scratch from a furniture/friend(accident)/pet and post this thread. And following the post learn about the thoughts of others and their position on the topic. And when you read theirs, mine in particular (not to brag) and get moved. And then this could lead to a conversion to Catholicism and become the next pope. So now I walk around with voice telling me places I need to go.
Sorry for the longevity.