Backlink

Not all backlinks carry equal weight. A link from a well-established, topically relevant site is generally treated as a stronger trust signal than one from an unrelated or low-quality domain, and search engines have invested heavily in detecting manipulative link-building (link farms, paid links disclosed as organic) specifically because raw link count alone was too easy to game.

The `rel` attribute on a link also matters: a `nofollow` or `sponsored` attribute tells search engines not to pass ranking credit through that link, which is standard practice for paid placements, user-generated content, and other links a site doesn't want to vouch for editorially.

In the T³ (Technical–Topical–Trust) Model, backlinks sit inside the Trust layer alongside author identity and entity consistency — genuinely earned links from relevant, credible sources being one input into trust signals, not the whole of it, and never a substitute for the Technical and Topical layers underneath it.