JWblog,
I had the experience you mentioned, as well. It turned out to be an earthquake in Seattle, WA. I was just south of the epicenter. It shook the couch I was sitting on and scared me to death! I thought it was demonz. I do believe in the possibility of ghosts. I feel energy in certain places and I also believe in ESP as a fact because of experiences with it. As far as physical things flying through the air or trying to scare me to death? No. Never happened. I believe that if there is an otherworldly realm that it is more covert than overt.
I thought the same thing actually. There was an earthquake in Wyoming and I live in Colorado. I asked my friends who are geologists if it was possible that the earthquake shook my futon. They said it was too far a distance to cause anything to shake in Colorado. It was very odd, I placed my hand on top of the futon as it was shaking to see if my dog was underneath but there was nothing visible underneath causing it to shake. And if it was an earthquake it would have rattled more than just an isolated futon.