The elements of a site that influence the quality of an external link

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Backlinks are still the most important ranking factor for Google and, although some speak of a near future where Rankbrain artificial intelligence will have found a way to replace this element for attributing ranking to web pages, link building campaigns still have their weight within SEO activities.

The 3 Quality Factors of a Backlink
Let's start by saying that quality depends on 3 factors:

1. Trust
It refers to the concept of Google TrustRank and determines the proximity of a site to another considered spam. If we had a situation in which our site is linked directly from another authoritative site, let's tunisia phone number say Repubblica.it, we could assume that the "trust" of our site will be high, because the Repubblica site will in turn be linked from many high quality sites that will have determined its authority. Differently, if between the Repubblica site and ours there are 5 other sites, which link to each other, until they reach ours, the level of Trust starting from the Repubblica site, will reach our site reduced.

2. Diversity
The backlink is an editorial vote. Just as in real life it would not make sense for a person to vote for another person multiple times, even for Google, in relation to the link building activity, it does not make sense for the same site to link to our site multiple times . For this reason, the links following the first do not have the same value as the first and precisely to understand the difference, we speak of referral link domain , to indicate a backlink coming from a site that links to us at least once (the first).