Hey guys, can someone please advice me? I have multiple domains which shows the same website. I don't know how this calls, but it works like this: domain1, domain2, domain3, etc. - all of them mirrored to domain1. It's not a redirect, just different domain names show the same website. The only difference is that domain1 displays all pages urls in browser, where domain2 and the rest just the domain. The question is, how good or bad this for SEO? And, if it's such a negative thing, what can I do with those domains? Set them on redirect? Thanks!