Why Links Ranking Signal Remain the Most Powerful

with the peoplesWhy links remain the most powerful ranking signal

In 2016, a Google engineer confirmed that links and content are the top two ranking factors. In 2024, a Google leak confirmed that PageRank — the original link authority algorithm — remains one of the core signals in Google's ranking systems. Despite years of speculation that links would eventually be replaced by AI understanding of content quality, the fundamental reality has not changed: links are powerful votes of confidence from the external web, and Google continues to treat them as the most reliable and trustworthy signal of a page's authority, relevance, and overall value.

The reason links remain so powerful is that they are incredibly hard to fake at scale. Anyone can easily write good content or optimise a page perfectly. But earning genuine editorial links from real, authoritative websites requires either creating highly valuable content that others genuinely want to reference, building strong and meaningful relationships in your industry, or producing original research and data that others naturally cite, trust, and share .

How PageRank works in practice

PageRank assigns an authority score to every page on the web based on the quantity and quality of pages linking to it — with each linking page's own authority factoring into how much it passes. Think of it as a voting system where each vote's weight depends on how much authority the voter has accumulated from their own votes.

When a high-authority page links to yours, it passes a significant portion of its PageRank to your page. That PageRank then flows through your internal links to other pages on your site. This is why getting a single link from a major publication can lift multiple pages on your site — not just the page directly linked.

Dofollow vs nofollow — what actually passes authority

Links come in two primary types from an SEO perspective:

• Dofollow links— The default link type. Google follows these links and passes PageRank through them. When someone links to you without any special attribute, it is dofollow by default. These are the links that build authority.
• Nofollow links— Links marked with rel="nofollow" tell Google not to pass PageRank through them. Common on Wikipedia links, comment sections, forum posts, and paid placements. Google treats these as a "hint" rather than a strict directive — it may still follow nofollow links but typically does not pass PageRank through them.
• Sponsored links— rel="sponsored" specifically flags paid placements. Google does not pass PageRank through sponsored links.
• UGC links— rel="ugc" (user-generated content) flags links in user submissions. Used on forums and comment platforms.

The vast majority of your link building efforts should focus on earning dofollow editorial links — links placed naturally within content by site owners who chose to link to you without payment.

The link building mindset shift

Most beginner link building fails because it approaches links from the wrong angle: "how do I get links?" instead of "why would someone want to link to this?" The second question is the right starting point. Every successful link building strategy is built on a genuine answer to that question.

Sites link to other sites for predictable reasons:

• The content contains original data they want to cite
• The content is the best explanation of something they are trying to explain to their readers
• The content is a tool or resource their audience will find useful
• The content fills a gap in their existing content that a link can plug
• The author has a relationship or reputation that makes the link feel natural

Build your link strategy around creating content that satisfies one or more of these reasons. Then find the sites that already link to similar content and reach out to them. This approach — create linkable assets, then outreach to likely linkers — consistently outperforms cold link requests for arbitrary pages.

Measuring link building progress

Track your link building progress through four metrics reviewed monthly in RankBridge:

• Referring domains— The number of unique websites linking to you. This matters more than total backlinks — 100 links from one site is less valuable than 10 links each from 10 different sites.
• Domain Rating (DR) distribution— What is the authority range of sites linking to you? A healthy profile has links across a range of DR levels, with a growing proportion of high-DR links over time.
• Topical relevance of linking sites— Are the sites linking to you topically related to your niche? Relevant links pass more authority than irrelevant ones.
• Link velocity— How many new referring domains are you acquiring per month? Consistent, gradual growth is healthy. Sudden spikes (hundreds of links in a week) can trigger spam signals.