So theres a site that ranks for one of the most competitive keywords on the internet. Lets call it site X. I checked its backlinks with majestic seo, but when I open one I don't see any links to site X. I've checked many backlinks with the same result (also the source code). I have checked the backlinks with an external link checker, opened all of them to see if there is a 301 redirect, but there isn't. I have checked the backlinks with google cache to see if the backlinks were there a few days ago, but no. Can somebody tell me how this is possible?