Does Google really treat nofollow links to discover new sites?

What does "signal" versus "directive" really mean?

Before this shift, Google considered nofollow as a directive: a strict instruction it committed to follow. A nofollow link passed neither PageRank nor authority, and the crawler simply did not follow this link to discover new URLs.

Now, nofollow becomes a signal among others. Google reserves the right to interpret it according to its own algorithm. The bot may decide to follow these links to explore new content, while probably continuing not to assign them any direct ranking weight. This is a crucial distinction: discovery ≠ passing SEO juice.

Why is Google changing its stance on nofollow?

The official answer revolves around improving content discovery. Google wants to identify new resources on the web, even if they are only linked via nofollow attributes. This is particularly true for sites that heavily use nofollow out of legal caution or editorial policy.

Between us, there’s also a matter of total algorithmic control. By transforming a directive into a mere indicator, Google regains control over decisions that webmasters had historically delegated. The engine can now choose when to ignore or respect your nofollow according to its own criteria — and those criteria are not public.

What pages will Google actually discover via nofollow?

John Mueller remains deliberately vague on the decision criteria. It can be assumed that Google selectively follows nofollow links to content it deems potentially relevant — new domains, orphan pages, resources not indexed elsewhere.

In practice, this mainly concerns high-authority sites. A nofollow link from a recognized media outlet or a major platform is more likely to be followed than a nofollow link from an anonymous blog. Google will not blindly crawl all nofollow URLs on the web — the resource cost would be outrageous.

• Nofollow is no longer an absolute block for page discovery but is likely still neutral for PageRank transfer
• Google reserves total latitude in interpreting this attribute, without communicating its decision rules
• Discovery via nofollow mainly concerns new domains or content not indexed through other paths
• High-authority sites see their nofollow links followed more frequently than smaller players
• No public data allows measuring the real impact of this change on index coverage

Is this statement consistent with real-world observations?

Yes and no. For several years, SEOs have reported cases of pages discovered only via nofollow links. These empirical observations already suggested that Google did not always adhere to its own doctrine. Mueller's statement thus formalizes a practice that probably already existed behind the scenes.

But the timing is suspicious. Why announce this change now? No public metrics demonstrate a significant gain in index coverage. One might legitimately think that Google is laying the groundwork for further modifications to link attributes — sponsored, ugc — and wants to harmonize its communication. [To be verified]: no large-scale independent study has measured the actual impact of this reversal on indexing.

What hidden risks does this evolution present?

The first risk is the loss of control for webmasters. If you used nofollow to prevent Google from exploring certain sections — unmoderated comments, user-generated content, low-quality archives — you have no guarantee that it will still work. Google may decide to crawl these areas nonetheless.

The second problem: total opacity of the system. How does Google decide when to follow a nofollow? No documentation. No published threshold. No reliable testing means. We're back to the black box syndrome — and this is exactly what frustrates serious SEO practitioners.

Should you change your internal linking strategy?

Not necessarily. Nofollow likely retains its main function: not diluting PageRank to pages of low strategic value. If you sculpt your internal linking with nofollow to concentrate authority on your critical pages, continue to do so. Google may follow these links to discover content, but nothing indicates that it assigns them ranking weight.

However, do not rely on nofollow as an absolute blocking mechanism anymore. If you really want to prevent Google from accessing a URL, use robots.txt, noindex, or server authentication. Nofollow has become a suggestion, not a barrier. And a suggestion that Google can ignore when it suits them.

Should you massively remove nofollow from your internal links?

No, that would be a strategic mistake. Nofollow likely retains its usefulness for internal PageRank sculpting. If you use it to avoid wasting SEO juice on your legal notices, contact page, or product catalog filters, keep it in place.

On the other hand, review your excessive defensive nofollows. Some sites place nofollow everywhere out of caution — comments, widgets, non-sponsored outbound links. If these links point to legitimate and relevant content, you can now leave them as dofollow without major risk. Google distinguishes between natural links and manipulation schemes.

How to ensure that your strategic pages are being discovered?

Start by auditing Search Console to identify orphan pages — those that Google indexes but do not receive any internal dofollow links. If some appear despite the absence of conventional followable links, it may be via nofollow paths or other signals (XML sitemaps, crawl history).

Second concrete action: compare your theoretical internal linking with your actual crawl. Use a crawler like Screaming Frog or OnCrawl in "respect nofollow" mode, then compare with Search Console data. Discrepancies reveal areas where Google explores despite your directives — and help you understand where it applies this new logic of "signal".

What strategy should be adopted for nofollow external links?

Favor contextually relevant sponsored and ugc attributes rather than generic nofollow. Google understands them better and can refine its treatment according to the type of link. A ugc link in a moderated comment is less suspicious than a raw nofollow that potentially hides anything.

For legitimate editorial partnerships, think twice before universally imposing nofollow. If you cite a reliable source, a useful tool, a complementary resource, a dofollow link strengthens your credibility and contributes to the web ecosystem. Google values sites that engage in natural and transparent linking.

These adjustments require a detailed analysis of your link profile and architecture. If executed poorly, they can dilute your authority or expose low-quality areas to crawling. If you manage a complex site or a multi-site ecosystem, support from a specialized SEO agency can avoid costly mistakes and optimize your decisions based on your specific business context.

• Audit excessive internal nofollows and remove those that unnecessarily block quality content
• Replace generic nofollows with sponsored/ugc according to the actual context of the link
• Cross-reference Search Console data with a crawl respecting nofollow to identify exploration discrepancies
• Ensure that your strategic pages receive at least one direct internal dofollow link
• Document your external linking policy to ensure consistency and transparency
• Test the impact of gradual changes rather than changing everything at once