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How to read a backlink report
A backlink report is only useful if you know what to do with it. Here is how to read yours, what the numbers mean, and how to turn your competitors' links into a list of sites worth contacting.
Backlinks and referring domains are not the same number
A backlink is one link from a page on another website to yours. A referring domain is the website that page belongs to. If a blog mentions you in forty posts, that is forty backlinks and one referring domain.
Search engines care far more about the second number. Forty links from one blog tell Google roughly what one link from that blog tells it. Forty links from forty different sites are forty separate votes. That is why this checker counts websites, not links, and why the headline number is referring domains.
What makes one link worth more than another
The website the link comes from matters most. A link from a site the rest of the web links to heavily carries more weight than one from a site nobody links to. Rankbench Authority measures exactly that: how central a site sits in the web's link graph, on a scale from 1 to 100.
Relevance comes next. A link from a site about your subject means more than one from an unrelated directory. Then placement: a link inside an article's text beats one in a footer or a sidebar that repeats on every page.
The histogram in your report shows how your links spread across authority. A healthy profile has a long tail of small sites and a handful of strong ones. A profile made almost entirely of sites under 10 usually means directories, scraped copies and spam, and it is worth finding out where they came from.
How to use the competitor gap
Add two or three competitors when you run the check. The gap lists every website that links to at least one of them and not to you, and puts the sites linking to several of them first.
Start at the top of that list. A site that links to two of your competitors has already shown it will link to businesses like yours. It might be a review roundup, an industry directory, a podcast, a partner list or a journalist who covers your field. Open it, find where the competitor is mentioned, and ask whether you belong on the same page.
We leave out the biggest hubs on the web, like search engines, social networks and hosting companies. They link to almost everyone, so they would fill the top of the list without telling you anything.
Getting new links without buying them
Buying links is against Google's guidelines, and it is the fastest way to waste money on SEO. The links that last come from being worth mentioning: publishing something people want to cite, being listed where your customers already look, and trading links with sites in your field where it genuinely helps their readers.
That last one is what Rankbench's backlink exchange is for. It matches you with other members' websites on related topics, you agree the pages and anchor text, and we check each link stays live after it is published. Nothing is automatic, and every link goes on a page where it makes sense.
Why a free backlink checker can show real data
Most free backlink tools show five rows and then ask for a subscription, because renting a commercial link index costs them money on every search. We built our own from Common Crawl's public web graph instead: more than 130 million websites and two billion links between them, rebuilt each time a new crawl is published. A search costs us almost nothing, so the results do not have to be a teaser.
The trade-off is freshness and depth. A public crawl sees fewer pages than a commercial crawler, and a link you earned last week will not appear until the next release. For understanding where your links come from, and where your competitors' come from, that is rarely the part that matters.
