My perception, perhaps because a male originated the internet discussion, was not that women were empowered to allow others to touch their breasts, but that first men and women were empowered to ask. I found that to be very odd. I will walk up and offer someone a backrub, but most of the time we don't go around touching or asking to touch each other's personal space. That's what gave me the creeps, along with the fact that it originally seemed like the idea was for this to happen between strangers and thus outside of any relationship context.

I think a discussion about exposing breasts in public would be a completely different topic (from what has been stated) but maybe similar to the original intent. I've heard a bit about this one, mostly in the context of breastfeeding. As the discussion is now, I suspect that emotions are so heated because there are more flash points than there need to be - intimacy, access, self-esteem, peer-pressure, and issues of who has control.