I just upgraded to 3.0 and was looking forward to using the multi blog function. I have a website which currently runs 5 wordpress installations, one in root plus 4 sub-directories. I was hoping to migrate the subdirectory blogs into the main root installation, but if sudirectory mutli-blogs is not possible, then I cannot. So, is it possible? So far only read that the only way to do a multi-blog is to add a wildcard subdomain and use subdomains. Is this true? WPMU allowed subdirectories didn't it?