Nofollow Links: Their Importance and Benefits in SEO
Nofollow links are one of the most misunderstood elements in SEO. The common assumption is that they do not matter because they do not pass authority. The reality is more nuanced, and dismissing them entirely leads to a skewed link building strategy that looks unnatural to Google and misses genuine traffic opportunities.
This guide covers what nofollow links are, how they differ from dofollow links, when to use each, and how they fit into a link building strategy for businesses in Northern Ireland and beyond.
Dofollow and Nofollow Links: The Difference
Every hyperlink on the web is either dofollow or nofollow by default. A dofollow link passes authority from the linking page to the destination page. When a reputable Northern Ireland news site like Belfast Live links to your business without any rel attribute on the link, that is a dofollow link, and it contributes directly to your Google rankings.
A nofollow link includes a rel=”nofollow” attribute in the HTML that instructs Google not to pass authority through the link. The link still exists, still sends traffic, and still appears in your backlink profile. Google just discounts it when calculating your page’s authority.
The HTML looks like this:
Dofollow: <a href=”https://yoursite.com”>Your Anchor Text</a>
Nofollow: <a href=”https://yoursite.com” rel=”nofollow”>Your Anchor Text</a>
Most links on social media platforms are nofollow by default. Wikipedia links are nofollow. Press release distribution sites typically add nofollow to outbound links. Many news sites and blogs add nofollow to links in comment sections. Understanding where nofollow links come from naturally helps you build a backlink profile that looks credible rather than manufactured.
The History of Nofollow Links
Google introduced the nofollow attribute in 2005 specifically to address comment spam. At the time, blogs and forums were being flooded with spam comments containing links, and webmasters had no clean way to signal to Google that those links were not editorial endorsements. The nofollow attribute gave them that mechanism.
In 2019, Google expanded the system by introducing two additional rel attributes. The rel=”sponsored” attribute is used for paid placements and advertisements. The rel=”ugc” attribute is for user-generated content such as forum posts and comment sections. Both function similarly to nofollow in that Google uses them as hints rather than directives, meaning it may still choose to follow and index the linked page, but it will not pass authority in the way a standard dofollow link does.
For Northern Ireland businesses managing their own link building, the practical implication is straightforward. Any link you pay for must carry the rel=”sponsored” attribute. Failing to mark paid links correctly is against Google’s guidelines and can result in a manual penalty against your site.
What Nofollow Links Actually Do
The SEO value of nofollow links is indirect rather than direct, but that does not make them worthless. A nofollow link from a high-traffic source still sends referral visitors to your site. A Belfast restaurant mentioned in a nofollow link on a popular food blog will see traffic from that link regardless of whether Google passes authority through it.
Nofollow links also contribute to a natural-looking backlink profile. A site that has only dofollow links looks suspicious to Google because that pattern does not reflect how links accumulate organically. Real editorial link profiles contain a mix of dofollow and nofollow links from a range of source types. A business in Derry with links from local directories, social media profiles, news mentions, and a handful of editorial dofollow links has a profile that looks earned. A site with 200 dofollow links from identical-looking guest post sites does not.
Google has also indicated that it treats the nofollow attribute as a hint rather than an absolute instruction. In practice, this means Google may still crawl and index pages linked to via nofollow, and may factor those links into its understanding of your site’s topical relevance even if it does not pass PageRank through them.
When to Use Nofollow Links
Paid and Sponsored Content
Any link within paid content, sponsored posts, or advertisements must use rel=”sponsored”. This applies whether you are paying for a guest post on a Northern Ireland business blog, sponsoring a local event and receiving a website mention, or running a paid directory listing. The obligation sits with the site publishing the link, but if you are the business paying for the placement, you should verify that the correct attribute is being used. A dofollow link in a paid placement that Google identifies as undisclosed sponsorship can trigger a manual action against your site.
User-Generated Content
If your website has a blog comment section, a forum, or any area where visitors can submit content containing links, those links should be nofollow or carry the rel=”ugc” attribute. This protects your site from being used as a vehicle for link spam and keeps your outbound link profile clean.
Untrusted or Unverified Sources
If you are linking out to a source you cannot fully vouch for, adding rel=”nofollow” is a reasonable precaution. This is common practice on news sites and large publications that link to external sources regularly but cannot verify the quality of every destination.
Nofollow Links and Local SEO in Northern Ireland
For businesses targeting local searches in Northern Ireland, nofollow links from local sources carry practical value even without passing authority directly. A mention on the Belfast City Council business directory, a nofollow link in a local newspaper’s online article about your business, or a citation on a Northern Ireland tourism site all contribute to your local presence in ways that go beyond PageRank.
Google’s local ranking algorithm considers the consistency and volume of citations across the web, including in nofollow contexts. A Newry-based catering company mentioned on multiple local business directories, event listings, and community websites builds a geographic footprint that supports rankings for searches like “catering company Newry” or “event catering South Down,” regardless of whether those citations are dofollow or nofollow.
You can read more about how citations and local link signals work together in my post on local SEO for Belfast businesses.
Building a Balanced Link Profile
The goal of link building is not to maximise the number of dofollow links while eliminating nofollow links. It is to build a profile that reflects genuine editorial interest in your content from relevant, credible sources. That profile will naturally contain both link types.
For a small business in Northern Ireland, a realistic link building approach might include dofollow links from industry associations, local business press, and supplier or partner sites, alongside nofollow links from social media profiles, local directories, event listings, and community organisations. Neither category alone produces a strong profile. Together they produce one that looks earned rather than engineered.
If you are running an active link building campaign alongside content creation, monitoring your ratio of dofollow to nofollow links over time gives you a useful signal about whether your profile looks natural. A sudden spike in dofollow links from similar-looking sources is the kind of pattern that attracts algorithmic scrutiny.
For a full assessment of your current backlink profile and how it compares to your competitors, an SEO audit covers this as part of a broader review of your site’s search performance.
Nofollow Links and AI Search
As AI tools including Google’s AI Overviews and ChatGPT increasingly reference web content in generated responses, the sources they draw from tend to be those with established authority and credibility signals. A business with a natural backlink profile that includes nofollow links from reputable local and industry sources is building the kind of web presence that AI systems associate with trustworthy content.
The nofollow links from a Chamber of Commerce listing, a local news mention, or a university partnership page contribute to a picture of legitimacy that extends beyond PageRank. You can read more about how to position your business for visibility in AI search results in my guide to AI Search and GEO for Northern Ireland businesses.
Frequently Asked Questions
Do nofollow links help SEO?
Not directly. Nofollow links do not pass PageRank, so they do not improve your rankings in the way dofollow links do. They do contribute to a natural-looking backlink profile, drive referral traffic, and support local citation signals. Google also treats the nofollow attribute as a hint rather than an absolute instruction, meaning it may still factor those links into its broader understanding of your site’s relevance and authority.
Should I try to get dofollow links instead of nofollow links?
Dofollow links are more valuable for rankings, but pursuing only dofollow links produces an unnatural profile. The most credible backlink profiles contain a mix of both. When assessing a link opportunity, the more useful question is whether the linking site is relevant, credible, and likely to send useful traffic, rather than whether the link is dofollow or nofollow.
What is the difference between nofollow, sponsored, and ugc?
All three tell Google not to pass PageRank through the link, but they signal different contexts. Nofollow is a general-purpose instruction for links you do not want to endorse. Sponsored is specifically for paid placements and advertisements. UGC is for links within user-generated content such as comments and forum posts. Using the correct attribute matters because Google uses these signals to assess the nature of your outbound links and the links pointing to you.
How do I check if a link is dofollow or nofollow?
Right-click on any link in a browser and select “Inspect” or “View Page Source” to see the HTML. If the anchor tag contains rel=”nofollow”, rel=”sponsored”, or rel=”ugc”, it is a nofollow-type link. If there is no rel attribute, it is dofollow by default. SEO tools including Ahrefs, SEMrush, and Google Search Console’s Links report will show the breakdown of your backlink profile by link type across your whole site.
Can I buy nofollow links?
Paid links of any type must be marked with rel=”sponsored” regardless of whether they would otherwise be dofollow or nofollow. Buying links and presenting them as organic endorsements is against Google’s guidelines whether or not they pass authority. The risk of a manual penalty applies to both link types.
How do nofollow links affect local SEO?
For local businesses in Northern Ireland, nofollow links from local directories, news sites, and community organisations contribute to the citation footprint that Google uses to assess local relevance. Consistency of your business name, address, and phone number across these sources supports local pack rankings for searches like “plumber Belfast” or “florist Derry” independently of whether the links are dofollow or nofollow. Read more about this in my post on local SEO for Belfast businesses.
If you want to understand how your current backlink profile is affecting your rankings and what a realistic link building plan looks like for your business, get in touch for a free consultation.
