Anyone have any experience with Ouija boards?

[Zebedeo]

I know that many people believe that Ouija boards are methods to communicate with deceased persons who exist in a different plane or dimension.

I know that many Christians believe they are dangerous because they allow access to demons posing as benevolent spirits or ghosts.

I also know that skeptics attribute the observed phenomena to either conscious or subconscious movement of the planchette by the participants, either through the ideomotor effect or through voluntary movement. Skeptics say that if the participants are blindfolded, the results are usually incomprehensible gibberish.

I would be interested to know whether anyone here has had a personal experience with a Ouija board (or similar talking board of a different name) that tends either to confirm or disconfirm any of the above hypotheses, or some other hypothesis about Ouija boards.

I myself have never owned or used one, so I have no personal anecdotes to contribute on the subject. However, I have heard stories that are quite chilling, if they can be believed.

I trust DU posters to honestly relate true stories of their experiences, if any, with Ouija boards.

(edited to remove duplicate word)