Aliasing of web sites, where multiple domains or URLs point to the same content, is a difficult area for search engines. Are “www.example.com” and “example.com” the same site? How can you tell?
SiteTruth, like most search engines, understands redirects. We recommend, as does Google, that webmasters pick one domain name for their site and redirect all others to it. For example, redirect “www.example.com” to “example.com”. Or vice versa.
SiteTruth rates the “base domain”, the domain one buys from a registrar. SiteTruth is about site ownership, so we have to work on the basis of what constitutes “property” on the Web. That’s a base domain.
If your base domain doesn’t work as a web site, and doesn’t redirect to your preferred URL, your site may receive a low rating.