According to researchers in Manchester, your house isn't haunted by ghosts - just bits of barely dectectable infrasound. OK..but that doesn't explain those times that I swear to God I've felt someone place his or her hand on the small of my back when I'm alone in the house. Or the times that both cats suddenly freak out and go into raccoon-tail mode as they stare down the empty hallway.
Are my cats spooked by infrasound? Is Infrasound giving me a lower back massage? I don't think so...I'm pretty sure our house has at least one ghost....but as long as s/he doesn't start throwing plates around or banging cabinets in the middle of the night or whispering boo in my ear on dark and stormy nights when I'm home alone - well then I think we can all just get along.