I'm spending my afternoon researching POD blogs and sites so I can write a (hopefully) intelligent letter to the editor of the Dallas Morning News. They ran an article today about POD technology, but limited it to what I would term vanity or self-publishing. Publishers such as Wings, who offer POD if the author wishes, were left out of the loop!
They did however give a link to an excellent blog on POD here at blogspot. http://girlondemand.blogspot.com is POD-dy Mouth who reviews POD books and talks about the industry. Besides that, it's a clever name.
I encourage you to go over and take a look!