I have one domain and my host allows me to set up a second domain on the same account for free. All the files for the second domain are located within a folder on the first domain, then the contents of that folder redirect(?) to the second domain. They call it an overlay.
It's set up and it works, now I'm just wondering if any ranking problems can come from this kind of a set up?
For one, the site is available under two addresses: 1domain.tld/folder and 2domain.tld