I am using WPMU to power a complicated directory site. My use case is as follows:
1. Main site located at http://example.com
2. Multiple blogs created for admins-only at http://city.example.com
3. User registration enabled for http://city1.example.com/blog1, http://city1.example.com/blog2, http://city2.example.com/blog1, etc.
Anyone know of a way to get this done? I'd also like for the subdirectory blogs to be domain-mappable, but as I understand it, because the blogs will be subdirectories instead of subdomains, domain mapping will not work in this scenario?
Please let me know if there is something obvious I am missing here.