Originally posted by: labgeek
The only reason I say it seems to make some sense is that for decades the medical community has said that breast feeding a child helps pass the mothers immunities to the child.  If that's true, then...
		
		
	 
That's true because mothers milk contains human immunoglobulin A. 
The idea behind the honey is different. You can take some irritant/antigenic substance and if you place it under someones skin, they develop an immune reaction to it (redness, swelling). But if they eat the same substance, there's no immune reaction (note that when you're immunized, you normally get injected, you don't take a pill).  
Now, since allergy is an immune reaction (it happens immunoglobulin E binds to an antigen), it was thought that by eating locally grown honey (which we'll presume is loaded with pollen, and perhaps some inactive mold spores), you'll present the allergen to the immune system through the GI tract rather than the nasal mucosa, and thereby suppress the immune response. 
Great theory, problem is that it doesn't seem to work. Honey's good for you anyway though.