Long and approving appraisal here
http://grumpyoldbookman.blogspot.com/
of the account by its founder of Macmillan New Writing, most particularly how it works economically, the contract, and so on.
One interesting thing which I hadn't realised is that MNW doesn't expect to make a profit, except where authors are successful enough to transfer to Pan Macmillan proper. This does mean MNW can't quite be a model for a stand-alone small publisher, but it's innovative enough to have the rest of the book trade looking nervously over its shoulder.
Emma