Overnight, Authonomy site administrators posted a response to the criticism on the forum:

This will be another free feature of the site. It certainly isn’t about exploitation. It won’t be compulsory. It is part of the authonomy toolkit. Like forums, messaging, RSS feeds, watchlists etc., we won’t be forcing anyone to use these features, but if you want to, then they’ll be there. For you.

Read the whole post here.

My initial thought is that if HarperCollins really are introducing the POD option simply as another feature of the site which adds value for its members, why bother to go to the expense and effort of building your own solution? Why not simply partner with an existing service, such as lulu.com, which is bound to be more efficient and less costly?