Bacon contains a rather large amount of salt which can pose problems for people who are trying to find ways to reduce salt in their diet.
Is there some method that can be used to reduce the amount of salt in bacon?
If you're buying bacon at the store, and trying to reduce the actual sodium in the product you've just purchased - you're out of luck. Like most things, you can't un-salt it. You can reduce the flavor, but in your case, the sodium is still there.
Alternative options include:
You CAN desalt bacon.
Place the bacon in tupperware filled with water. Be sure to arrange the bacon so they are interlaced at the ends, allowing their surfaces to be exposed to the water.
Leave it overnight in the fridge. Drain the water.
Be careful, though, as removing the salts and preservatives will shorten the lifespan of your bacon. Therefore, you'll have to consume it relatively quickly. Otherwise, only desalt the peices you expect to eat.
Another option to consider is to go to your local butcher and ask them to cure you some bacon specially. As @rfusca says, "you can't 'unsalt' it", but the butcher can cure it with significantly less salt. Alternately, the butcher may be willing to either smoke cure or sugar cure the slab.
You can reduce the salt content of bacon by blanching it in simmering water for 30-60 seconds before you fry it. This is just like boiling a country ham in order to remove salt prior to baking. This will not remove all of the salt, but will make it noticeably less salty.
Place cooled cooked bacon in frying pan and cover with water and heat up for a few minutes. Then drain the water off and reheat in frying pan or microwave. Will reduce saltiness by half.