I personally believe that ghosts are real. I've actually had some experiences. The most recent one happened today.
I had finished listening to my iPod, which was plugged into my iLamp (iLamp's rule, btw), and I decided to go on the computer. Before I did, I turned off my iLamp, iPod, and put my iPod on "Hold". A few minutes later, I decided to upload some albums onto my iPod, so I went to go get it. When I got into my room, the first thing I noticed (besides the fact that I need to clean it), was that my iPod was that the "Hold" switch was flipped the other way, and my iPod was on and playing, though no sound could be heard because the iLamp was off.
Like I said, I think ghosts are real, but that's just me. The fact that I want to minor in parapsychology also helps to show I believe in ghosts.