SEO & link value · Knowledge
How do links pass value (“link juice”)?
The founding idea of modern search: every link is a citation, and pages cited by trusted pages earn trust themselves – value flows along links, from page to page.
The folk term “link juice” captures the flowing part and misses the rest: not all links are equal, context and placement weigh in, and search engines have long moved beyond raw counting.
What strengthens a link, what weakens it – and nofollow's role
The classic model: a page holds a certain amount of authority and distributes a share of it across its outgoing links – which already explains the dilution intuition: one link from a strong page says more than one of two hundred from the same page. Modern reality refines rather than replaces this: links from topically related, editorially maintained pages weigh more; a link inside the flowing text of an article outweighs one in a footer repeated across thousands of pages; and freshness, anchor context and the linking page's own standing all feed the judgement. What nofollow changes in this picture: a nofollow link is exempted from the vote – since the 2019/2020 hint era not necessarily to exactly zero, but for planning purposes treat it as “passes no value”. Two practical consequences follow. For your incoming links: a natural profile contains both kinds, because real mentions on the web simply do come in both flavours – an all-follow profile looks engineered. For your outgoing links: the value logic is precisely why hand-picked follow links to genuinely strong sources are a quality signal of your own content, and why the safety-net-plus-exceptions approach (enforce nofollow broadly, whitelist and bypass the deliberate votes) matches how value actually works.
Key facts
- Founding principle: links are citations – trust flows from page to page along them.
- Not all votes are equal: topic relevance, in-text placement and the source's standing weigh in.
- Dilution is real: one of few links from a page says more than one of hundreds.
- nofollow: exempt from the vote – plan with “passes no value” despite the hint nuance.
- Natural profiles mix both kinds – incoming and outgoing.