PBN guys can you answer this question?

So everyone has always looked at www. version of a domain vs the non www. version when searching for domains. We buy and use whichever version has the higher metrics.

Well now it seems as if Majestic is saying that you should only ever look at the root domain (non www.) when purchasing a domain.

"If you are buying or selling domains, don’t evaluate at the sub-domain level if you are buying a Top Level Domain. There. You have been informed."

Heres the link to the post: https://blog.majestic.com/development/trust-flow-yo-yo-algorithm-update-majestic/

Can anyone shed some more light on this? Does this mean all my domains with higher metrics on the www. version are only as good as whats on the non www. version? This sucks!

Checking "www.domain.com" version of the trust flow has been bullshit forever. Every TF5 domain was all of a sudden TF20+. I've mentioned this to all of my clients and basically everywhere I could, that the "www.domain.com" version is heavily inflated. You can use majestic in 2 ways. You can either check EVERY domain EVERYWHERE with "www.domain.com" or use "http://www.domain.com" for every domain. So basically what was TF20+ for you in the past year, was maybe TF8+ for me.

So yes, Majestic now significantly reduced the inflation on "www.domain.com" version. That's why you experience such brutal drops. I've been using "http://www.domain.com", as everyone should and the drops are there, but maybe 2 points on average, nothing that significant.

And what it means is, that your domains on "www.domain.com" version were never as good as you thought they are. What you see on "http://www.domain.com" is what the actual TF that everyone uses should be. You can also work with root "domain.com", but definitely not with a subdomain.

What @Nargil says ^

We add hundreds of domains to our networks every month and we've always only checked metrics using "http://". I'm not really sure why some people ignore this and just choose to go with "www" instead just because the TF is higher.

The biggest drop we saw from using "http://" was probably something like TF 25 to TF 22. On the other hand, I've seen some guys who used just "www" drop from TF 26 to as little as 5.

Either start tracking your metrics with the right URL structure... or focus on another metric such as RD which is slightly more reliable.