Are all hauntings bad?
That all depends on how you classify a haunting. To me, a haunting is a situation where you have a negative spirit at work, be it human or inhuman. In my mind, the presence of a benign human spirit does not constitute a haunting. Therefore by my definition, a haunting is bad. However, many people consider a haunting to be a situation where any spirit is present and some even call the presence of a psychic recording a haunting. By their definition, all hauntings are not bad.
