Link Building for SEO: What It Is, What Works, and What Can Actually Hurt You

Written by Graham , Hosting Manager & Director at EzyWeb 08/09/2026

Backlinks are still one of the biggest ranking factors Google uses — but they’re also one of the easiest ways to damage a website if you go about them the wrong way. Every year a batch of small business owners get talked into a “guaranteed backlinks” package, and every year some of them end up with a manual action wiping out their rankings instead. Link building works. Bad link building actively hurts you. Here’s how to tell the difference.

What Is Link Building?

Link building is the process of getting other websites to link back to yours. Each of those links (called a “backlink”) acts as a vote of confidence in Google’s eyes — the logic being that if other reputable sites are linking to you, your content is probably worth linking to.

Not all votes count equally. A link from a well-established, relevant, trusted site carries far more weight than a link from a random low-quality blog. Google is also looking at how a link was earned. A link you got because a journalist genuinely referenced your research is treated very differently to a link you paid a stranger $20 for on a “backlinks marketplace.”

Why Backlinks Still Matter

Search engines can’t ask other websites directly whether your content is good, so they use links as a proxy signal. A strong backlink profile tells Google your site has authority and relevance in your space — it’s part of what Google calls E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness). Sites with a healthy mix of relevant, earned backlinks generally rank better and recover faster from algorithm updates than sites with none, or sites with an obviously manipulated link profile.

What Works for Link Building in 2026

Create something worth linking to. Original research, free tools, calculators, templates, and genuinely useful guides attract links on their own because people cite them naturally. This is the slowest tactic to set up but the one that keeps paying off for years without ongoing outreach.

Digital PR. Pitching journalists and industry publications original data, commentary, or a genuinely newsworthy angle still earns high-authority links — and increasingly matters for visibility in AI-generated answers, not just traditional search.

Broken link building. Find dead links on relevant sites (using a backlink checker or a browser extension), then let the site owner know and suggest your own working page as a replacement. It’s a genuine favour to them, which makes it one of the higher-response outreach tactics going.

Reclaim your own lost links. Sites that used to link to you sometimes remove the link, break the URL, or forget to add it back after a redesign. Tools like Ahrefs or Semrush can show you where this has happened so you can ask for the link to be restored.

Study competitor backlinks. Seeing who links to your competitors — directories, associations, suppliers, media outlets — gives you a ready-made prospect list of sites that are already open to linking to businesses like yours.

Get featured on resource and “best of” pages. Industry associations, local business directories, and “best tools/suppliers for X” roundup pages are realistic, achievable link targets for most small businesses.

Guest posting — done properly. Writing a genuinely useful article for a relevant, real publication (not a content farm) still works. The difference between this and spam is relevance, quality, and doing it occasionally rather than at scale across hundreds of site

Local citations and partnerships, for local businesses. Consistent listings on Google Business Profile, industry directories, local chamber of commerce sites, and links from suppliers, partners, or trade associations are low-effort, low-risk, and genuinely useful for local search visibility.

Nofollow links still have value. A rel=”nofollow” link (common on social platforms, forums, and some directories) doesn’t pass ranking credit the same way a standard link does, but it still drives referral traffic, brand visibility, and — per current data — has a similar impact on visibility in AI search tools as a standard link. Don’t dismiss them entirely.

What Doesn’t Help — or Actively Hurts

Buying links. Paying for a link (cash, product, or “service exchange”) specifically to pass ranking credit breaches Google’s link spam policy outright. Paid links used for genuine advertising are fine — but only if they’re tagged nofollow or sponsored so they don’t count as a ranking signal. Buying “dofollow” links to manipulate rankings is exactly what gets sites manually penalised.

Private blog networks (PBNs). Networks of low-quality sites built purely to link back to a “money site.” Google is very good at detecting these patterns now, and getting caught can mean your site is deindexed, not just demoted

Link farms and mass reciprocal linking. “I’ll link to you if you link to me” is fine occasionally between genuinely related sites. Doing it systematically and at volume, or joining a “link exchange network,” is a textbook link scheme.

Low-quality directory submissions. Mass-submitting your site to hundreds of generic, unmoderated directories does nothing for rankings and can actively drag your link profile down. This is different from a handful of relevant, legitimate industry or local directories.

Keyword-stuffed anchor text. If every backlink to your site uses the exact same commercial keyword as the clickable text (“best plumber Gold Coast” over and over), that’s an unnatural pattern Google’s algorithms are specifically built to catch.

Widget and footer links. Handing out an embeddable badge, widget, or “powered by” link that quietly drops a hidden or keyword-rich backlink onto every site that installs it is explicitly called out in Google’s guidelines as a link scheme.

Comment and forum spam. Dropping your URL into blog comments or forum signatures across hundreds of sites has essentially zero SEO value today and mostly just flags your domain as spammy.

Automated or “guaranteed backlinks” services. Any service promising a fixed number of backlinks for a flat monthly fee is almost always running some version of the tactics above at scale. If you can’t see exactly which sites you’re getting links from and why those sites would ever link to you organically, assume it’s risky.

What Happens If You Get Caught

Google’s spam policies aren’t just guidelines — they’re enforced both algorithmically (your rankings quietly drop, no notice given) and manually (a formal “manual action” in Google Search Console, which can suppress or completely remove your site from search results). Recovering from a manual action means identifying and removing or disavowing the bad links, submitting a reconsideration request, and waiting — often weeks — for a human reviewer. It’s a slow, painful process compared to just not doing the risky tactic in the first place.

If you inherit a messy backlink profile (from a previous agency, a “backlinks package” bought years ago, or negative SEO from a competitor), Google’s Disavow Tool lets you tell Google to ignore specific bad links pointing at your site. It’s a last resort, not a routine tool — use it when you have genuine evidence of a harmful, unnatural link pattern, not as a first move.

The Bottom Line

Good link building looks boringly similar to good marketing: create something worth citing, build real relationships, get featured where it’s genuinely relevant, and let links accumulate naturally over time. Bad link building looks like a shortcut — because it’s designed to be one — and shortcuts around Google’s guidelines tend to catch up with you eventually, usually at the worst possible time.

Link building is also only one piece of the puzzle. A site with a great backlink profile sitting on slow, insecure hosting still won’t rank or convert the way it should. If you want a second set of eyes on where your SEO efforts are actually paying off — or aren’t — it’s worth a conversation.

Frequently Asked Questions

How many backlinks do I need to rank well? There’s no magic number — quality and relevance matter far more than raw count. A handful of links from genuinely authoritative, relevant sites will outperform hundreds of low-quality ones every time.

Does guest posting still work for SEO in 2026? Yes, but only when it’s done for genuine relevance and quality — writing for real, relevant publications occasionally. Guest posting at scale across low-quality sites purely for anchor text is exactly what Google’s spam policies target.

Are paid directory listings worth it for a small business? A small number of relevant, legitimate industry or local directories (chamber of commerce, industry associations, Google Business Profile) are genuinely useful, especially for local SEO. Mass submission to generic directories is not.

What’s a link disavow, and do I need one? It’s a tool that tells Google to ignore specific backlinks when assessing your site — used when you have clear evidence of a harmful, unnatural link pattern pointing at your domain (like negative SEO from a competitor, or an old spammy backlinks package). Most sites never need to touch it.

Can other websites hurt my SEO by linking to me without my permission? It’s rare, but possible — this is what the disavow tool exists for. In most cases, a handful of low-quality links pointing at you organically won’t cause real damage; it’s a pattern of it, especially combined with other spam signals, that raises flags.

How long does link building take to show results? Months, typically, not weeks. Earned links take time to accumulate and for Google to factor into rankings. This is one of the reasons “guaranteed fast backlinks” offers are a red flag — genuine link building doesn’t work on that timeline.

Do nofollow links help SEO at all? They don’t pass ranking credit the way standard links do, but they still contribute to referral traffic, brand visibility, and appear to carry meaningful weight for visibility in AI-powered search and answer tools. A backlink profile that’s 100% dofollow can itself look unnatural, so a healthy mix is normal.