Link building
How link building actually works (and what to avoid)
Backlinks explained properly: what makes one link worth more than fifty, how Google weighs them, and which tactics still work in 2026.
Links are how the web was originally navigated and they are still how search engines understand which pages are worth trusting. Every link is one site vouching, in public, for another.
The mechanism is simple. Almost everything written about it is not, mostly because a large industry has an interest in making it sound harder than it is.
What a backlink is, precisely
A backlink is a link from someone else’s site to yours. That is the whole definition. What varies — enormously — is how much any given one is worth.
Three parts of the link tag decide most of it:
- The destination. Which page receives the value. A link to your homepage helps your homepage; a link to the guide you actually want ranking helps the guide.
- The anchor text. The clickable words. This tells Google what the destination is about, which is why “read the full guide to technical SEO” is more useful than “click here” — and why a hundred links all reading “cheap seo services” looks obviously bought.
- The
relattribute.nofollowandsponsoredtell Google to discount the link. A normal editorial link has norelat all and passes value by default.
Why the citation comparison is the right one
Google’s original insight was that academic papers rank each other by citation. A paper cited by many respected papers is probably important. A paper cited only by its own author is probably not.
Links work the same way, with the same failure modes. Which is why the two questions Google asks about a link are the two a journal editor would ask: is the source credible, and is it credible about this specific subject.
What happens when Google finds a link
It discovers the link
A crawler following pages finds an anchor pointing at your URL. This is also how new pages get found in the first place — links are the discovery mechanism as well as the ranking signal.
It weighs the source
How trusted is the linking site, based largely on who links to it? Authority is recursive, which is why a link from a site nobody links to is worth close to nothing.
It checks the subject
Does the linking page relate to yours? A national newspaper linking to your plumbing guide from a piece about plumbing is worth far more than the same paper linking from an unrelated listicle.
This is the part people skip when they chase Domain Authority alone.
It reads the placement
Inside the body of an article, surrounded by relevant text, counts. Site-wide footer links, sidebars and comment sections are heavily discounted — Google can tell the difference between a recommendation and a template.
It assigns whatever it is worth
Which may be a lot, a little, or nothing at all. There is no minimum. A link can genuinely count for zero.
The difference between a link that works and one that doesn’t
In short: The single best test is whether the link would still be worth having if search engines did not exist.
The tactics that still work
None of these are secrets. They are all just work, which is why they continue to function.
Approaches worth your time
0/ 6
That is the whole list. Anything still unticked is your next job.
The common structure is that each one gives the other person a reason to say yes that is about them, not about you. Outreach that fails almost always fails because it only explains why the link helps the sender.
What to avoid, and why it is not scaremongering
The unifying thread is manipulation. Google’s position is straightforward: if the main purpose of a link is to influence rankings rather than to help a reader, it does not want to count it.
What makes this different from other SEO mistakes is the asymmetry. Thin content wastes your time. A detected link scheme can cost you a manual action, and recovering from one takes months of disavowing and reconsideration requests to get back to where you started. The downside is not “it did not work” — it is “you are now behind where you began”.
How to tell whether any of it is working
Four numbers, in rough order of usefulness:
- Referring domains, not total links. Fifty links from one site is one vote, repeated. Growth here is the honest measure.
- Rankings for the pages you linked to. Links are a means. If the target pages are not moving, the links are not doing their job regardless of how many arrived.
- Referral traffic. Real people clicking through. A link that sends visitors is doing two jobs and is almost certainly a good link.
- Lost links. Pages get rewritten and links vanish. A profile that gains twenty and loses eighteen a month is not growing, and only shows up if you track it.
Where links sit against everything else
Links matter, and they are not first. A site Google cannot crawl properly will not benefit from them, and a page that does not answer the query will not hold a ranking that links won it.
The order that works is: fix the technical foundations, build pages that deserve to rank using proper keyword research, then earn links to the pages worth pointing at. Doing it in the other order is how people spend a lot of money on links to a page that was never going to convert anyone.
Common questions
How many backlinks do I need to rank?
There is no number, and anyone quoting one is guessing. What matters is how many distinct sites link to you relative to whoever currently ranks for your target term — and how relevant and trusted those sites are. Ten links from real, relevant sites will beat a thousand from directories every time.
How long does link building take to work?
Individual links can move a page within weeks once Google recrawls the linking page. The compounding effect takes months. It is the slowest part of SEO and the hardest to shortcut, which is precisely why it still differentiates.
Do nofollow links have any value?
Not directly for ranking — Google treats rel=nofollow and rel=sponsored as hints to discount. They still send real visitors, still build brand awareness, and a natural link profile contains plenty of them. A profile made entirely of dofollow editorial links looks manufactured, because it is.
Can I just buy backlinks?
You can, and it violates Google's spam policies unless the links carry rel=sponsored. The risk is not theoretical: bought link networks get detected in waves, and the recovery from a manual action costs far more than the links did. It is the one area of SEO where the cheap option is genuinely dangerous.
What is anchor text and how should I use it?
The clickable words in a link. It tells Google what the destination page is about, so descriptive beats 'click here'. But a profile where most anchors are your exact target keyword looks engineered — real links use your brand name, the page title, or a fragment of a sentence. Variety is the natural state.
What is the difference between a link and a mention?
A mention names you without linking. It carries some value as a brand signal, but it does not pass authority. Finding unlinked mentions and asking politely for a link is one of the highest-conversion outreach jobs there is — the person already thought you were worth naming.