The topical domain lists on Hammerhead Domains use Majestic’s Topical Trustflow to categorize domains.
Majestic uses both the website content and the content of high trust backlinks to categorize domains. Just because a domain has high topical trust in a category, doesn’t necessarily mean that it was previously used for that topic. But assuming it hasn’t been spammed, it usually does mean that it would make a great PBN domain in that topic.
I’ll explain why in a moment , but first let’s unwind how topical trusflow works…
How Majestic Topical Trust Works
Majestic’s topical trust is modeled after PageRank, which means it can be passed through several layers of webpages if the source was strong enough to begin with. If, for instance, the Wikipedia page on Robotics links to a domain primarily about education, which links to your PBN domain, your PBN domain will likely have some topical trustflow in the Computers / Robotics category even if it was actually used as a forum about celebrity gossip.
Some of these make sense, but how does he have such damn high trust in Computers / Programming / Languages? He doesn’t talk about Ruby, PHP, or Java on his site….. He actually doesn’t write about programming languages on his site almost at all.
When we look at his backlinks, it makes more sense. He has backlinks from high trust sites that do talk about programming languages. Take a look at devscripts.net where he has a sidebar link with the anchor text “Tutorials”.
And look at the topical trust scores for devscripts.net. Topical trust of 34 in programming languages!
Of course, devscripts.net makes a lot of sense that it has trustflow in the Computers / Programming / Languages topic, but we can take it back even one step further. How has devscripts.net topical trust gotten so high for that topic? It’s not because Majestic likes it’s content, it’s that it has even more authoritative backlinks in the same topical trust:
That means Texfly is just 2 steps away from all these High Authority domains in the programming languages niche.
I don’t know about you, but if I was building a PBN about programming languages and I found texfly.com was available to use in my PBN, I would grab it in a second. It doesn’t matter that the previous content was about SEO and not programming languages, it would be incredibly useful to rank my programming languages site.
Topic Neighborhoods: A Better Way to Understand Topical Trust
As you can see, high topical trust doesn’t necessarily mean the domain has been used for that topic. But it’s extremely good at indicating which topic neighborhoods the domain is in. If your domain has a high topical trust in a niche, it means your domain is close to other domains that are trusted in that niche.
Many people have the misconception that in order to have a strong topical PBN domain, the domain needs to have been used for their exact topic.
The truth is, though, that you’re going to redevelop the domain anyway. You’re going to put up your own content, that relates directly to your niche. So having the old content be related to your topic really isn’t so important. Instead, what you should pay attention to is whether the domain is in your topic neighborhood and is close to any sites with Trust in your niche.
Once you redevelop the domain, the content will be relevant to your topic anyway. And if you get a domain with high topical trust, some of the backlinks will also be relevant to your niche.
Majestic topical trust, is of course an approximation of how google categorizes their own internal topical trust. It’s not always 100% accurate to Google’s internal calculations, but it’s the best we’ve got and it seems to work pretty well.
With all this said, I should mention that I’ve had great success with domains that are in completely different topic categories from my money sites, so I don’t think having a related topic is essential. But it certainly won’t hurt and will probably add a lot more clout to your links.