I had a board, growing up. Never had the plastic thingy that went with it. I used it when I wanted a lap desk, sitting on my bed, or needed a way to move a jigsaw puzzle or something like that. I was too young to know anything about the stuff people here are alluding to.
Today, I would not own one nor allow it in my house. I have no experience with anything negative from the cardboard and plastic, but I've seen enough evil to know I don't want it around my family or me... and not a chance it's going to be there by invitation.
I have no experience with one myself, but was told many years ago that it is not something to fool with. Those who told me about it, I trust their word, and have no desire to bring that type of thing into my home.
The Ghost adventures show on Travel channel did an episode based on these things last night, it was pretty interesting.
Does HASBRO dip the game board in pure, liquid evil; or maybe concentrated spirit world door lube or how does the game become so contaminated, vile and dangerous? What about Tarot cards? Devilish? How about the "MAGIC" 8-ball? Demonic? I have played with all of those. To be honest, the game that I fear the most is Chutes & Ladders. My kids went thru a phase where they wanted us to play it with them about 14 times a day. Or how about the never ending Monopoly game during a snow day? If you are not careful, you may get so wrapped up you play right thru Gilligans Island.