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Che cos'è il Nofollow

What is Nofollow for an SEO Knowledge Base website?

Nofollow is an HTML attribute used in hyperlinks to instruct search engines not to pass any link equity or ranking influence from the referring page to the linked page. It was introduced in 2005 by major search engines, including Google, to combat spammy link building practices and maintain the integrity of search engine result pages (SERPs).

When a website owner adds the rel=\”nofollow\” attribute to a hyperlink, it essentially signals search engine crawlers to ignore that particular link when determining the linked page\’s ranking and relevance. In other words, nofollow links do not contribute to the recipient page\’s authority, nor do they impact its search visibility.

The primary purpose of using nofollow links is to prevent the abuse of link schemes that aim to manipulate search engine rankings. Search engines consider natural, organic links as a vote of confidence from one website to another. However, some individuals or businesses may engage in unethical practices such as buying or exchanging links to artificially boost their site\’s ranking. To counteract this, nofollow was introduced as a way to identify and discount such links.

Nofollow links can be implemented in several ways. One common approach is to add the rel=\”nofollow\” attribute within the HTML anchor tag. For example, a typical hyperlink with a nofollow attribute would appear as follows:


It is important to note that nofollow links still allow users to navigate to the linked page by clicking on them. The attribute only affects search engine bots\’ behavior and their interpretation of the link\’s significance.

From an SEO perspective, understanding when and where to use nofollow links is crucial. While nofollow links do not directly contribute to a website\’s search rankings, they still have value in certain contexts. For instance, when a website features user-generated content, such as comments or forum posts, using nofollow links can be beneficial to prevent the spread of spam or low-quality links.

Additionally, when linking out to external sources that are not necessarily endorsed or related to your website\’s content, applying the nofollow attribute can help search engines understand that the link is not an endorsement or a vote of confidence. This practice is particularly relevant for sponsored content or advertisements, where the intention is to provide information rather than confer authority.

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It is worth mentioning that while nofollow links do not directly influence rankings, they can still indirectly impact SEO efforts. For instance, websites may attract more organic traffic by building relationships and gaining exposure through nofollow links on high-traffic platforms. Furthermore, even though nofollow links don\’t pass link juice, they can still contribute to a diverse and natural backlink profile, which is an important ranking factor.

In summary, nofollow is an HTML attribute used to instruct search engines not to consider a particular link for ranking purposes. By implementing the rel=\”nofollow\” attribute, website owners can indicate to search engine crawlers that a link should not pass any link equity or ranking influence. Nofollow links play a vital role in maintaining the integrity of search engine result pages, preventing spammy link building practices, and providing more control over outbound links. While they may not directly impact search rankings, understanding when and how to use nofollow links is essential for effective SEO strategies.

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