Definition
A backlink (or inbound link) is a hyperlink on another website pointing to yours — historically the most important off-page ranking signal in Google's algorithm, with quality and topical relevance now far more important than raw quantity.
Backlinks were the original ranking signal: Larry Page and Sergey Brin's PageRank algorithm (1998) treated inbound links as votes of credibility, and the most-linked-to pages won. Google's algorithm has evolved since — now incorporating hundreds of signals — but backlinks remain among the most important. The difference is that quality, relevance, and natural acquisition matter far more than they did in 2005.
The modern playbook is earned, not bought. Spammy directories, paid networks, and link-buying schemes are detected and penalised — the recovery costs more than the links saved. The slow path — producing content people genuinely want to link to, doing PR, partnerships, original research — produces links that don't get penalised when Google updates its algorithm.
Origin
PageRank's link-based ranking (1998) made backlinks valuable. Penguin (2012), Google's anti-spam algorithm update, ended the era of low-quality link buying. The discipline today is closer to PR and content marketing than to link-trading.
How it works
- Audit current backlink profile (Ahrefs, SEMrush, Majestic) — quality, relevance, distribution.
- Disavow toxic links if any (low-quality, spammy, irrelevant).
- Identify content other sites already link to in your niche; produce better.
- Pitch journalists, podcasters, and relevant publications with genuine angles.
- Build relationships, not transactions. The best links come from people who know your work.
- Measure new referring domains over time, not just total backlinks.
When to use it
Use when
- Always — backlinks compound over years.
- Especially when your domain authority is low and competitors outrank you despite weaker content.
Skip when
- Through paid link networks, PBNs, or link-trading schemes.
- Before there's content worth linking to. Cart before horse.
Key metrics
- Number of referring domains (more meaningful than total backlinks).
- Domain authority / domain rating of linking sites.
- Topical relevance of links.
- Anchor-text distribution (over-optimised exact-match anchors look unnatural).
Examples
- One backlink from a top-tier industry publication outranks 50 from low-quality directories.
- Spammy backlinks hurt rankings more than they help.
- Original research drove 47 referring domains in three months.
In practice at Makreate
Makreate SEO retainers include earned-link strategy — guest posts, digital PR, partnerships — not link-buying schemes that get you penalised. A recent fintech client had 280 referring domains, mostly low-quality. We disavowed the toxic ones, shipped two pieces of original research, and ran a 90-day digital-PR push. They earned 41 high-DR referring domains in that window, and rankings on commercial queries climbed measurably as a direct result.
Advertising →Common mistakes
- Buying backlinks. Algorithms catch link networks; recovery costs more than the links saved.
- Over-optimising anchor text. Real link patterns have brand and naked-URL anchors mixed in.
- Chasing volume over quality. 5 high-authority links beat 500 low-quality.
- Ignoring the broken-link strategy. Recovering broken links is the easiest backlink building.
- No relationship building. Cold pitches without context have <5% reply rates.
Frequently asked
Dofollow vs nofollow?
Dofollow links pass ranking signal; nofollow historically didn't. Google now treats nofollow as a hint rather than directive — it can still pass some authority. Mix matters less than it used to.
How many backlinks do I need to rank?
Whatever exceeds your specific competitors on the specific query. Use a tool like Ahrefs to see the average referring domains of the top 10 results — that's your floor.
Are paid links ever okay?
Sponsored content and paid placements are fine if marked rel="sponsored" and don't violate Google's guidelines. Hidden paid links violate guidelines and risk penalty.