I'm sure this is heresy, but I use the copper variety to "help" out on electrical contacts too. For example, the PS side door-jam light switch failed to make good contact with the frame, despite the bolt being nice and snug (it's a grounding point too). Had to clean the bugger about every six months. Problem was the ground wasn't good enough and after a while, the light would flicker as you drive along, even though the door was fully closed.
A little dab of the copper flavored anti-seize and I have had no problems with it in over two years now.
