Link Building Strategies That Work (and the Ones Google Calls Spam)

Link building is the work of earning links to your website from other credible sites. The strategies that work are the ones that give people a real reason to link: original research, useful tools, expert commentary, genuine partnerships and well-placed digital PR. The strategies that do not work, and can get you penalised, are buying links for ranking, link exchanges and automated link schemes.

Links remain one of the signals search engines use to understand which sites are worth trusting. Google's local ranking guidance even lists how many websites link to a business as part of prominence. But links are also the area where shortcuts do the most damage. This guide sets out what Google's spam policies say, which strategies are safe and effective, how to run a campaign step by step, how to measure it honestly and how to tell a good provider from a bad one. It is a strategy guide. If you want to buy placements or services, our separate link building services and backlink marketplace pages cover that. For the wider context, see our SEO guide.

What link building is, and why it matters

A backlink is a link from another website to yours. When a credible site links to you, it is in effect vouching for the page. Search engines use links in two main ways: to discover pages, and as one of many signals about how well known and trusted a site or page is. Google has not published how it weighs them, and it has said many times that quality matters far more than quantity.

For business sites the practical benefits are:

• Visibility. Pages with relevant links from credible sites tend to rank better, all else equal.
• Referral traffic. A good link sends real visitors, sometimes high-intent ones.
• Brand recognition. Being mentioned by trusted publications and communities builds awareness.
• Local prominence. Google says the number of websites linking to your business can contribute to how well known it is, which affects local ranking.

What Google's spam policies say

Google's spam policies define link spam as creating links to or from a site primarily to manipulate search rankings. Its examples include:

• Buying or selling links for ranking purposes, including exchanging money, goods or services for links, or sending someone a product in exchange for a post that includes a link.
• Excessive link exchanges, and partner pages made only for cross-linking.
• Using automated programs or services to create links to your site.
• Requiring a link as part of terms of service or a contract without allowing the other party to qualify it.
• Advertorials or native advertising where payment is received for articles that include links that pass ranking credit, and links with optimised anchor text in guest posts or press releases distributed on other sites.
• Low-quality directory or bookmark site links, and keyword-rich or hidden links in widgets distributed across many sites.
• Widely distributed links in the footers or templates of various sites.
• Forum comments with optimised links in the post or signature.

Google also recognises that buying and selling links is a normal part of advertising and sponsorship. It is not a violation to have such links, as long as they are qualified with a rel="nofollow" or rel="sponsored" attribute. Google's documentation on qualifying outbound links says to use sponsored for advertisements and paid placements, ugc for user-generated content links and nofollow when the other values do not apply. Read the full list in the spam policies.

The simple test: would this link exist if search engines did not? If a link exists only because you arranged it to influence rankings, it is risky. If it exists because someone found your work useful, it is safe.

Safe and effective link building strategies

1. Create assets worth linking to

The most reliable approach is to publish things other people want to cite.

• Original research. A survey of your customers, an analysis of your own data or a benchmark, with the method clearly stated. Journalists and bloggers cite data.
• Tools and calculators. A free cost estimator or checker that solves a real problem.
• Definitive guides. The most complete, accurate explanation of a topic in your field.
• Templates and checklists. Practical resources people share.
• Visuals. Clear diagrams and charts that others can embed with credit.

2. Digital PR

Digital PR means earning coverage in news sites, trade publications and blogs by offering something newsworthy: a data story, an expert opinion on a current event, a campaign with a human angle. Build relationships with journalists in your field, respond to genuine requests for expert comment and keep your claims accurate. Good PR produces links that are editorial, relevant and credible. Our digital PR services follow this approach.

3. Expert contributions and guest articles

Writing for a respected publication in your field can be valuable when the purpose is to share genuine expertise with that audience. Be careful about the details. Google's spam policies list articles and guest posts distributed on other sites with optimised anchor text as link spam. Write for the readers. Link to your site only where it is genuinely helpful, usually in an author bio or where you cite your own research, and expect the publisher to decide how to qualify links.

4. Partnerships and community

Suppliers, customers, industry bodies, local organisations and charities often have pages listing partners or members. A genuine relationship can lead to a legitimate link. Sponsoring a local event, joining a trade association or speaking at a conference are real activities that often earn mentions.

5. Reclaiming unlinked mentions

Sometimes people mention your brand without linking. Find those mentions and politely ask the author to add a link. This works because the mention already exists, so the request is reasonable and the result is relevant.

6. Fixing broken links

If a page on another site links to a resource that no longer exists, and you have a relevant replacement, you can tell the site owner. It helps them fix a broken link, and it earns you a relevant link. Do it sparingly and only when your page is a true fit.

7. Customer and supplier assets

Case studies, testimonials and supplier pages can lead to links from the companies involved. Ask for credit where it is natural, and offer to supply a quote or a logo.

8. Local links

For local businesses, links from local newspapers, chambers of commerce, community sites and sponsored local groups reinforce local relevance. See our local SEO checklist.

9. Internal strength first

Before chasing external links, make sure your own pages are strong and well linked, so that earned links lead to pages that can convert and rank. See our internal linking guide.

Strategies to avoid

Tactic	Why it is a problem
Buying links that pass ranking credit	Listed as link spam by Google unless qualified with sponsored or nofollow
Link exchanges and reciprocal schemes at scale	Excessive link exchanges are listed as link spam
Private blog networks	Networks created to pass ranking signals fall under link spam and can be penalised
Automated link building and comment spam	Automated link creation and optimised forum signatures are listed as spam
Mass directory and bookmark submissions	Low-quality directory links are listed as link spam
Press releases stuffed with keyword links	Optimised-anchor links in distributed press releases are listed as link spam
Widget and footer links across many sites	Widely distributed footer and template links are listed as link spam
Hacked or injected links	Illegal and harmful to the victim sites

If a provider guarantees "50 backlinks a month" without telling you which sites, or promises a specific domain rating, be cautious. Ask to see example placements and how each was obtained.

A link building campaign, step by step

1. Set the goal. Which pages need to rank, and for which topics? Link building supports specific pages, not the site in general.
2. Audit your existing links. Review who already links to you, which pages attract links and whether any harmful links exist. Most sites do not need to disavow anything. Google says its systems generally ignore spammy links, and the disavow tool is for unusual cases.
3. Study competitors. See which sites link to competitors and why. Look for patterns such as industry publications, resource pages and tools that attract links.
4. Choose the asset. Decide what you will publish or offer that deserves a link: data, a tool, a guide, expert commentary.
5. Build the asset well. Accurate, clear, well-designed and well-sourced. If it would not impress an editor, do not promote it.
6. Make a target list. Journalists, bloggers, publications, associations and communities that cover the subject and would find the asset useful. Prioritise relevance over size.
7. Reach out personally. Write short, specific, honest emails. Say what the asset is, why it is relevant to their audience and what is new about it. Do not send mass templates.
8. Follow up once, politely. Then move on.
9. Track results. Record every link earned, its source, relevance, anchor and the page it points to.
10. Learn and repeat. See which assets and angles worked, and do more of them.

Outreach that gets replies

Most outreach fails because it is generic. A good email has three features: it shows you read their work, it offers something useful and it makes the next step easy. An invented example:

Hi Sam, I read your piece on small business energy costs. We surveyed 400 UK small firms on how they cut bills and found that fewer than one in five had checked their contract end date. The full data and method are here. If it is useful for a future article, you are welcome to use the charts with credit. Happy to answer questions.

It is short, specific and generous. It does not ask for a link directly. If the writer finds the data useful, a link is a natural result.

What makes a good link

Quality	Look for	Be wary of
Relevance	A site and page about a topic related to yours	Unrelated sites with no connection
Editorial	The link is placed because the author found it useful	Links placed for payment or a trade without disclosure
Credibility	A real site with real content, readers and editorial standards	Thin sites that exist only to sell links
Context	The link sits inside useful content that explains why it is there	Footers, sidebars and lists of unrelated links
Traffic	The page attracts real visitors	Pages nobody reads
Natural anchor	Descriptive, varied wording	Exact-match keyword anchors every time

Third-party metrics such as domain rating or authority scores are each tool's own estimates. Google does not use them. They can help you compare sites quickly, but do not treat them as targets.

Measuring link building honestly

• Links earned that are relevant and editorial, not just the total count.
• Referring domains that are new and relevant.
• Rankings and traffic for the target pages, compared against similar pages without new links.
• Referral traffic from the linking pages, and its conversion rate.
• Branded search volume, which can rise with coverage.
• Enquiries or revenue influenced by the campaign.

Expect link building to take months to show an effect. A single link from a major publication can move rankings, but you cannot promise it. If a provider reports only a count of links, ask for the sources, relevance and results.

Link building for local and small businesses

You do not need hundreds of links. A small set of relevant, credible ones can make a real difference.

• Join your trade association and chamber of commerce and make sure your listing links to you.
• Sponsor local events or teams and ask for a link on the organiser's site.
• Offer expert comment to local press.
• Publish a local guide or data piece that local media might cite.
• Ask suppliers and partners to link to you from relevant pages.
• Claim and complete relevant, reputable directories, avoiding low-quality bulk submissions.

Link building and AI search

AI search tools also draw on the wider web. Mentions on credible sites may help systems describe you accurately, but this is an inference, not a published rule. Google's guide to its generative AI features says seeking inauthentic mentions is not as helpful as it might seem. So the same approach applies: earn genuine coverage by being useful, and avoid mass-produced placements. We cover the AI side in our guide to getting cited by AI search engines.

Choosing a link building provider

Ask these questions of any provider, including us.

1. How exactly do you earn links? Can you show examples of placements and the outreach behind them?
2. How do you make sure paid or sponsored placements are properly qualified?
3. Do you use automated tools or private networks?
4. What do you report: link counts, or results on rankings and enquiries?
5. What happens to the links if we stop working together?
6. Will you promise a number of links or a ranking? (A good answer is no.)

Google publishes guidance on evaluating third-party SEO advice. It advises caution about guarantees. Treat guaranteed rankings and bulk link packages as red flags.

Common link building mistakes

• Starting with outreach before you have anything worth linking to.
• Chasing quantity and metrics instead of relevance and credibility.
• Using the same keyword anchor for every link.
• Buying links without qualifying them and hoping for the best.
• Sending mass, impersonal outreach.
• Ignoring the pages the links point to, so earned links lead to weak pages.
• Expecting results in weeks.
• Not tracking where links came from.

A worked example: a data-led link campaign for a small firm

This is an invented example. A Newcastle firm that installs home insulation wants links from relevant publications without buying them.

The asset

The firm analyses its own anonymised data from 600 home surveys over three years: the age of properties, the most common causes of heat loss and typical savings estimates. It publishes the method clearly, including the limits of its data, and creates a page with charts, a downloadable summary and a small calculator that gives a rough estimate for a home's heat loss.

The audience

Regional journalists covering housing and energy, local and national energy bloggers, home improvement publications, housing associations, local councils and energy advice charities.

The outreach

The firm writes personalised emails to 40 contacts. Each mentions something the person has written and explains one finding that fits their audience, such as "Terraced houses built before 1920 in the North East lost most heat through the loft and walls in our survey data". It offers the data and a short expert comment from the lead surveyor.

The outcome

Over two months, seven people reply. Three publish pieces that use the data and link to the page, one council energy advice page links to the calculator as a resource and one regional paper quotes the surveyor with a link. The firm also earns a few unlinked mentions, which it follows up politely. It reports honestly: seven relevant links from credible sites, referral visits and enquiries from the calculator, a modest gain in rankings for some local insulation terms, and a note that the outcomes depend on the data being genuinely useful and newsworthy. The firm repeats the exercise a year later with updated data.

Questions owners often ask

Question	Short answer
Can I just buy a few links to get started?	Google lists buying links for ranking as link spam. If you buy placements for advertising value, qualify them with rel="sponsored" and do not expect ranking credit
Is asking a supplier for a link okay?	Yes, if it is a genuine relationship and a relevant page. Avoid reciprocal schemes at scale
Are directory listings worth it?	A few reputable, relevant directories for your industry or area can help customers find you. Mass low-quality submissions are listed as link spam
What if I find bad links pointing to my site?	Usually ignore them. Google's systems generally discount low-quality links. Use the disavow tool only in unusual cases
Do links from social media help?	Social links often carry no ranking credit, but they can bring visitors and mentions that lead to earned links
Should I use rel="nofollow" on my own outbound links?	Use it, or sponsored or ugc, where those values apply, as Google's guidance describes. Normal editorial links need no attribute

A story of link building without a big budget

This is an invented composite. A husband-and-wife business in Cumbria that runs guided walking holidays had a pleasant website and a handful of links, mainly from directories. They had been approached by agencies offering packages of "50 high-authority backlinks a month", which they declined because they could not see how the links were obtained. Instead, they decided to try earning links through what they knew best: the area, the walks and the people who walk them.

They started by listing real relationships. They had worked with a local B&B, a mountain rescue team that they supported each year, a regional walking festival, three outdoor gear shops and a local newspaper whose editor had once interviewed them. They asked each, informally, whether they might link to a relevant page on the couple's site where it made sense. The festival listed them as a recommended guide provider. The mountain rescue team added a "Thank you to our supporters" page, with a link to the business. The B&B added a "Things to do" section, and the newspaper mentioned them in an article about local tourism, linking to the site.

Next, they created a resource: a free, downloadable map-based guide to six short family walks in the Lake District, with honest notes on difficulty, parking, toilets and what to do in bad weather, written by the couple after walking each route several times in the past month, and checked for accuracy. They published a page for it and sent a short personal email to ten local tourism sites, walking blogs and family travel writers, saying what it was and inviting them to use it. Six replied. Three added links, two wrote short posts and one asked for photos to illustrate an article.

They also kept an eye out for mentions of their business without links, and politely asked two sites to add one. And when a travel journalist asked on social media for tips about winter walking safety, the husband sent a short, useful note drawing on 20 years of experience. She quoted him in an article and linked to the business.

Over a year, the couple earned about 25 relevant links, with a few more mentions that did not include links. Rankings for "guided walking holidays Lake District" improved, and enquiries increased, although they also did other things, including collecting reviews and publishing new walking guides. They never bought a link, joined a scheme or paid for a placement. Their approach was simple: be helpful, be specific, ask politely and give people something worth linking to. They also followed the rules in Google's spam policies, which helped them sleep well.

Where we can help

We are a digital marketing agency in Manchester, UK and Mumbai, India. Our link building services and digital PR focus on earned, relevant placements, and we explain how each was obtained. Contact us for an honest view of what your site needs.