Why not mod_rewrite to allow for something like http://www.alistapart.com/articles/succeed http://www.example.com/agent1 http://www.example.com/agentx http://www.example.com/agent4 I'd be careful to change the domain for each branding. After all I presume you want to promote example.com aswell Subdomains seem to get more mainstream by now, we had some clients prefer them. I think it might be google who did it.