This is a great thread of comments. I blogged about NMOLP a couple of weeks ago, http://bridgetmckenzie.blogspot.com/2009/03/great-creative-spaces-debate.html
This draws attention to the educational focus of the project, and points out that Webquests were a key part of the scope which hasn’t been acknowledged in the promotion & debate.
Since then, I’ve been playing quite a bit with Creative Spaces. In a nutshell I’m waiting to see more users join who aren’t ‘us lot’, to see how it will really work.