Backlinks remain one of the most measured signals in blogging and online community growth. The figures below describe the scale of modern link indexes, how often links disappear or fail, what correlates with prominent Google positions, and how practitioners approach link building. Historical survey and study findings are attributed to their original publishers and should be read as reported results, not as independently verified current measurements.
Contents
- The scale of backlink indexes
- Link loss and reliability
- Backlinks and Google rankings
- How professionals build links
- Content formats, relevance, and campaign results
- Budgets, providers, and business demand
- How SEOs view links
The scale of backlink indexes
Ahrefs reported that its backlink index contained 35.0 trillion external backlinks. Its Backlink metrics reporting also described an index containing 493 billion pages. Those figures put the size of commercial backlink databases in perspective: a single site’s profile is being evaluated inside an enormous web graph.
The same Ahrefs Backlink Checker figures reported 28 trillion internal backlinks and coverage of 500 million domains. Internal links are distinct from backlinks, but the comparison is useful. A website’s navigation, related-post links, category pages, and community references can create a substantial internal structure even before another domain links to it.
Ahrefs also said its system was updated with fresh data every 15 minutes. That update claim describes the provider’s index, not a guarantee that every page or backlink changes at that rate. For bloggers, it is a reminder that backlink counts are time-sensitive measurements rather than permanent facts.
Link loss and reliability
Backlink totals can decline because pages are removed, URLs change, domains expire, or links become inaccessible. Ahrefs’ link rot study sampled 2,062,173 websites and found that at least 66.5% of links to sampled websites had rotted since January 2013. The study reported 74.5% of links as lost overall.
The reported failure categories were not identical. Temporary errors affected 6.45% of sampled links, while another 1.55% had other issues that prevented them from being counted for ranking purposes. Together, these figures show why a raw backlink count should not be treated as a count of permanently functioning recommendations.
Ahrefs gave its own site as a concrete example: 26.9 million lost links out of 174.3 million links in the ahrefs.com backlink profile. This example was part of the link-rot research and should be understood as a historical reported observation from that study.
For a small blog or online community, the practical measurement is therefore broader than “how many links do we have?” A useful review also asks whether the linking page still exists, whether the destination resolves, and whether the link remains available for search systems to evaluate.
Backlinks and Google rankings
Backlinko’s ranking study reported approximately 95% of all pages had zero backlinks in an analysis of 11.8 million results. In a separate analysis of 912 million blog posts, Backlinko reported that 94% of content had zero backlinks. The two percentages came from separate analyses and should not be combined.
Among pages that did rank, Backlinko reported a strong difference between the first result and positions two through ten. The number-one Google result had 3.8 times more backlinks than positions two through ten, and three times more referring domains. Referring domains matter because many links from one site do not represent the same breadth of independent sources as links from several relevant sites.
Several other reported first-page measurements provide context for interpreting link statistics:
| First-page measure | Reported finding |
|---|---|
| Average content length | 1,447 words |
| Average URL rating | 11.2 |
| Median URL rating, positions 1–6 | 12 |
| Median URL rating, positions 7–10 | 11 |
| Average load time | 1.65 seconds |
| Average top-10 URL length | 66 characters |
These are correlations and descriptive averages from the Backlinko study, not guarantees that a page will rank after matching them. Backlinko also reported that pages in the top six had a median URL rating of 12, compared with 11 for positions seven through ten. URLs at position one were 9.2 characters shorter on average than URLs at position ten.
The same study reported that top-10 pages typically contained 65% to 85% of the keyword in the title tag and 60% to 80% in the H1 tag. Its model found a 1% difference between the number-one and number-ten results in title-tag matching. Backlinko also reported that increasing time on site by three seconds correlated with ranking one position higher. None of these measurements isolates backlinks as the only cause of ranking performance.
Ahrefs examined a narrower question in its links-with-traffic study. It analyzed 44,589 non-branded keywords and found only 20 search results pages where every top-ranking page had at least one link with traffic. That was reported as one in every 2,229 SERPs. The result suggests that links from pages receiving traffic were uncommon across the sampled search results, rather than automatically present on every prominent page.
How professionals build links
Aira’s State of Link Building 2022 survey found that 68% of respondents used content marketing specifically to generate links. Competitor analysis and targeting competitors’ links was used by 54%, while 47% used guest posting.
The survey also measured tools and data preferences. Ahrefs was used for link-building purposes by 82% of respondents, Google Sheets by 60%, and SEMrush by 56%. When asked whose link data they trusted most, 64% selected Ahrefs and 14% selected Google Search Console. These are survey responses, not an objective ranking of tool accuracy.
Link-building operations also included risk management and brand effects. Aira reported that 51% of respondents maintained a Google Search Console disavow file. Brand mentions were reported by 67% of respondents as a result of link building, and 80% believed brand mentions influence organic search rankings.
Practitioners differed on syndicated links. Thirty-three percent did not count syndicated links toward link targets, while 30% counted them the same as other links. Campaign destination choices were more consistent: 70% said campaign links usually pointed to the page hosting the campaign rather than the homepage.
Content formats, relevance, and campaign results
The Aira survey found that 40% of respondents considered obtaining links from outreach targets the hardest part of content-led link building. Meanwhile, 53% had a content-led campaign that generated between one and nine links during the previous 12 months. The latter figure describes a reported campaign outcome, not a typical guaranteed return.
Long-form, report-style content was selected by 56% as the most effective format for generating links. Interactive content was selected by 42%. For a blogging site or community publication, these findings point toward formats that give other publishers a reason to cite a page, while still leaving the actual result dependent on topic, execution, and outreach.
Relevance was measured in terms of both the page and its broader domain. Aira reported that 62% considered the topic of the page containing a link the most important relevance factor. Another 52% selected the topic of the domain as the next most important factor.
The survey also recorded different beliefs about ranking impact. Forty-eight percent said links positively influence rankings outright, while 34% said links positively influence rankings only when a site has no major technical SEO issues. Sixty-nine percent believed paid links positively influence rankings, a belief reported by respondents rather than a statement that paid links comply with search-engine guidelines.
Budgets, providers, and business demand
In Aira’s 2022 survey, 33% of respondents worked in-house rather than in agency or freelance roles. Among in-house respondents, 34% worked at enterprise companies, 29% at national businesses, 29% at funded startups, and 8% at local businesses.
External support was not universal. Aira reported that 64% of in-house respondents did not use external agencies, freelancers, or contractors for link building, up from 56% in 2021. Among those reporting external-resource spending, 25% spent $10,000–$25,000 per month on link-building support and 19% spent $2,500–$5,000 per month. More than 80% dedicated up to 50% of their SEO budget to link building.
Expectations were mixed but generally stable or positive. Forty-six percent of in-house respondents expected link-building budgets to increase the following year, while 43% expected them to stay the same. Around 43% said obtaining buy-in and budget was easy or close to easy; only 9% said obtaining buy-in was very hard.
Agency and freelance models showed another pattern. Retainer pricing was used by 45%, while 8% used price-per-link pricing. Seventy percent did not offer a guarantee for link volumes or metrics. Demand for services had increased over the previous 12 months for 59%, stayed the same for 32%, and decreased for 9%.
Perceived industry difficulty varied. Thirty-one percent of agencies and freelancers named healthcare or pharmaceuticals as the hardest industry for link building. Beauty and personal care was named easiest by 35%, while 26% named marketing, advertising, or public relations among the easiest industries.
How SEOs view links
Aira reported a perceived effectiveness score of 7.8 out of 10 for link building. Timing expectations were more restrained: 49% expected ranking and traffic impact within one to three months, while 30% expected it within three to six months.
Long-term confidence remained high in the survey. Ninety-four percent of SEOs believed Google would still use links as a ranking signal in five years, and 73% believed it would still do so in ten years. These are expectations recorded in the 2022 survey, not forecasts independently validated against later search-system changes.
Finally, 84% of respondents said they did not report competitors for breaking Google guidelines. Taken alongside the survey’s findings on disavow files, relevance, link quality, and budget, this reflects a field focused on monitoring and measurement as well as acquisition. For readers building a blog or online community, the statistics support a balanced workflow: earn relevant references, review whether links remain live, track referring domains and destination pages, and interpret ranking movement alongside broader technical and content signals.