I'm a believer. I used to manage an old recreation centre and all kinds of weird things used to happen and the reports came from all kinds of people who had no idea of what the employees would see and hear and these people had no idea that we thought the place was haunted. We had children as young as four years old say they would see a lady standing on the downstairs steps, people would hear laughing late at night when they were working alone, doorknobs would rattle, lights would turn on by themselves, stuff would move around. All kinds of creepy stuff.
Most of it centred around one particular area of the building. One night a writer was in the building for a Tai Chi class, he had written two books about ghosts and I mentioned to him that he should check the place out as we thought it was haunted, and he went right to the spot. Another time we brought in a psychic and she also went to the same spot. Neither of them had any way of knowing the history of what we had experienced. We had brought the psychic in to do readings for some of the staff and she taped them for us....you could hear banging on the tapes that couldn't be heard when the readings were going on. Alot of other things happened, but this would be a very long post if i went into it.