The never-ending debate.

This is a fun article because it links lots of other articles and has message boards, etc. I especially enjoyed this article from a man's p.o.v. An honest, progressive approach. But my favorite part was this by Cindy Post:

What's a guy to do?
Cindy Post Senning, of the Emily Post Institute and co-author with Peggy Post of “Emily Post’s The Gift of Good Manners: A Parent’s Guide to Raising Respectful, Kind, Considerate Children,” doesn’t think men ought to do much of anything.

“I would not make a point of reacting. Do whatever you would normally do. Work on the laptop, read a magazine, stare into space.” There’s no need to talk, either. “You do not want to make a comment that implies ‘Ooh, what’s going on here?’ Why would you say something?”

On the other hand, Senning says, if the nursing mother were sitting next to you, or in some situation where you might normally converse with a person, do what you would do if she were bottle feeding. “If you are the type who would be inclined to say ‘How old is the baby’ or ‘What’s her name’ or whatever, then go ahead. Otherwise let it be.”

Because to me, that's the most convincing argument: In the breast-feeding sense, the breast is nothing more than a bottle. If you're uncomfortable with it, just think of it as a bottle. (They even make bottles that look and feel like breasts. What would people do if these were the norm!?)