Wired:

The site looks a lot like craigslist, except instead of selling used cars and like-new Ikea furniture, Only the Breast deals in human breast milk. There are hundreds of posts from new mothers eager to turn their surplus into profits. Many kick off with a chirpy headline (“Chubby baby milk machine!”), then follow with a snapshot of their own robust infant and lush descriptions (“rich, creamy breast milk!” “fresh and fatty!”), making a primal source of nutrition sound like a New York cheesecake. The posts are additionally categorized to appeal to a variety of milk seekers, based on a baby’s age (from 0 to 12 months), say, or special dietary restrictions (dairy- and gluten-free). There’s also a sort of “anything goes” section for women willing to sell to men. Some ship coolers of frozen milk packed in dry ice. Others deal locally, meeting in cafés to exchange cash for commodity. The asking price on Only the Breast runs $1 to $2.50 an ounce. (A 6-month-old baby consumes about 30 ounces a day.)
You know what I'm thinking? I'm also thinking about this. And, why not, this also comes to mind. All of this thinking is NSFW.