Alright, I'll answer this without being a smarmy jackass like most everyone else.
I am Agnostic Atheist. Some people hate that term because they think I can't commit to full-blown Atheism. Fuck them, I won't discredit the rare possibility that there's an ounce of unproven truth to any given faith. I would just rather not see organized religion have so much influence in society at large because it tends to be dangerous in the wrong hands. I am a logical person, show me the proof and I'm on-board. However, I'm also a spiritual person in that I'm not deriving any idea of it from a religion. It's my own personal perspective based on life experience and some of this may come off as double-speak.
Now, I don't believe it's something as simplistic in definition as a "soul" but I feel it's a level of energy that we all carry which cannot be scientifically measured. It's something that remains to varying degrees after our bodies no longer function. Some people are more sensitive to it than others which I feel X amount of paranormal sightings are legitimately based on. I like to think that people who were very attached to this life have a greater chance of retaining their consciousness to a degree and remaining on this plain of existence. Can any of it be scientifically proven? No, not a lot of it. Providing you're of sound health and mind, it can only be your own personal experience that hopefully will add another dimension to your way of looking at the logical world.
It's a spiritual level of thought that I think should be explored a lot more without the intrusion of cockamamie man-made religious nonsense.
As for the Ouija Boards, you take from it what you want to believe. In some reported paranormal cases, you can just as easily write out the letters on paper and use a drinking glass to allow an entity to communicate. It's not the game that's "evil." It's just that, a game. If you were actually attempting to speak to an incorporeal person, it just happens to double as a communication tool.
If you really wanted to make a serious attempt at speaking to any of these bodiless people, you'd need filmed and documented proof that there was zero interference with the board, no parlor tricks, no strings or magnets. That is, if you wanted to make believers out of us or justify your own feelings and experiences. If not, don't be surprised with the sarcasm and insults from everyone here. I'm not belittling you in the least, I'm simply presenting all sides to your inquiry.