I’m slowly getting my head around WPMU. It looks like the original installation is a blog, of course, a sort of mother blog. In fact it is likely that WPMU could be used as a WCMS just like the ordinary WP with the option of not using the blog facility at all, or subordinating it to another page, and having a series of static pages with one of them as the home page. If this was installed in the web site root then a series of client blogs could be set up as pseudo subdomains. So, for instance, a WPMU web site could have a url like terrywassall.org with a blog and static pages but, as it is a WPMU installation lots of other blogs could created like user1.terrywassall.org and user2.terrywassall.org. I assume that WPMU woudl make just as good a WCMS as WP. Of course this would not be worth doing unless a number of client blogs were needed as well.