If you want to create a second site on your main site would you create it on a subdomain or on a directory? When I started to build websites, I read that search engines treat subdomain sites independently therefore, you have a better chance of traffic. Thus I started creating sites on subdomains. Later, I read that subdomain sites are never treated independently, so you might not get better online visibility, which made me create sites on a directory. How do you build a secondary site, on a subdomain or directory?