I have no idea how often you see ghosts, spirits or other apparations, but I have seen seen so many I can't count them on 2 hands any more. It comes and it goes; sometimes I see them constantly and other times I go for months without seeing anything.
I have been working at this job for about 5 months now, enjoying it very much. The bar I work at is quite old (actually not the bar itself but the building is) and has quite the history behind it. The first 2 months were alright I suppose, nothing much happening. But then we had an infra-red camera installed in the 'Backstage Bar' and I started seeing orbs floating around there (since we have a little tv behind the big bar to watch backstage we can see all that throughout the night). I have looked things up about orbs and figured out that what I saw (and see) is not dust, nor bugs. It's not fast enough to be a bug and too big to be dust. Sometimes this orb will float acorss the room for so long you can follow it around and see it respond to the people sitting down and having a drink. I have asked my boss for the tapes but he has unfortunatly refused, so I can't show them :(
I have also felt someone tugging my hair, hearing someone speak my name, seen really odd reflections in the windows (unrecognisable faces, if you turn around there is no-one that looks even remotely the same. You can tell me so many things about ghosts and spirits that I probably won't know, but I know what I feel and I know what I sense and that place is 'haunted'!