I mostly have personal experience to share on this but, as with Cindy, the thing I had the most success with was also heat.  As an adoptive mom with a partial milk supply, I didn't have a lot of leaking, so I used 10-12 inch squares of cotton flannel, folded in four, as breast pads.  My biggest problem was when the baby would unlatch and the air hit my nipple.  It would suddenly clamp down and turn white.  That hurt a lot, but not as much as when the blood started returning and they turned blue!  What helped the most was to use my flannel squares as mini heating pads.  While the baby was nursing, I kept my nursing pad inside my clothing, against my skin, to keep them warm.  If I could get them back over my breast as soon as the baby unlatched, it usually prevented the vasospasms.  

My last baby is on her way to college, next month, but I still cringe when I think about it, so I really feel for moms who are struggling with it!
 		 	   		  
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