Having a child with a friend - co-parenting

As readers of my new book 'Baby or Not?' will know, I am a big fan of alternative family arrangements.  The NY Times has recently run an article Seeking to reproduce without a romantic partnership on having a child outside a romantic partnership or co-parenting.

Great quotes from people who are raising kids this way! Also the article has links to websites where you can meet other people looking for a co-parent.