A few years ago my friends and I were talking about them, because they are a very interesting concept to teenagers. Into that creepy, scary movie stuff, haha. And the only person who had used it was my friend's mom. She said that they asked the board who would die first, and it spelled out one of the girl's names. They were pretty creeped out about it, but nothing happened for a few years. They brushed it off and believed that nothing was going to happen. So a few years down the road, the friend died in a pretty horrible, bloody accident. Nothing about it was normal and nothing about it was natural.
So ever since I heard that story I have never wanted to use one.
But I am also the person who is afraid to walk in cemeteries at night because I've always been told it invites the spirits, both good and bad, to come unto you.
I have my own special place to talk to those who have gone before me and to feel of them (my grandparents, uncle, etc. anyone who I cared deeply about).
So I just go there where I am happy. I don't even want to risk something bad happening to me or anyone I love.