A paid link, or a paid backlink, is a hyperlink to your website that you purchase with money. Paid links aimed at improving the website’s rankings on search engines, such as Google, are link schemes and violate search engines’ policies.
Buying links is the most common activity of black hat SEO.
Paid links can come in different forms, such as:
However, not all paid links are manipulative, and some are safe and natural.
For example, links from advertisements, sponsored articles, product placements, etc., that have the “nofollow” or “sponsored” attribute do not violate Google’s policies. But they also don’t pass “link juice” and have no effect on the website’s rankings in search.
If Google detects paid links to your site, it will most likely devalue (ignore) them.
In the worst case, Google can impose a manual action on a website buying or selling links. This can lead to the website’s demotion in search results or complete removal.