The open-heel end of a horseshoe can be hung facing up or down. If it is pointed up, it basically means that the good luck can flow out and surround the home; if it is pointed down, it means that the luck can spill out. So, hanging the horseshoe with the pointed end up over a doorway will bring good luck. When hung over a door with the ends down, it allows good luck to spill over the door while keeping evil out.