Very creepy. I once heard a similar story from an acquaintance; of course I can't vouch for it since I wasn't there, but here's what he told me:

He and his sister found a Ouija board on top of a kitchen cabinet and decided to play with it. They didn't get much in terms of results, but were still kind of creeped out, so they threw the board in the trash outside.

The next morning, it was back on top of the kitchen cabinet.

Now they were REALLY scared and tried to burn the board outside in a metal barrel. He said they stuffed newspaper all around it and threw some other things into the barrel for good measure -- everything burned to ashes, but the board was not even singed.

They actually had to pour gasoline over it, and then it finally worked.

As I said, don't know if it's true, but it's definitely a frightening story.