Okay, bear with me here. I don't know even enough to know how to ask this.
I have a website that's based on user directories. In other words, mysite.com//, etc. There are no actual directories though. It's done with mod-rewrite. It's really something like mysite.com/item.php?user=joe&dir=joesdirectory1. You get the idea.
Anyway, people are building pages on my site, and I'm wondering if, as a service, I can somehow "host," (if that's the right word), domains and subdomains. So if user joe wanted to integrate his homepage on my site with his own website, he could maybe point his subdomain to his user area on my site such that all the pages under mysite.com/joe/ would actually appear to be pages on joespage.com. Does that make sense? Would it be possible? And most importantly, is it something I could automate? (Managing through the control panel wouldn't be practical, of course.)
I'd be grateful to anyone who could point me in the right direction.