Backlink: what is an inbound link and which ones count?

When your regional builders' association mentions you with a link, that is a backlink. When you pay a stranger for fifty of them, that is a problem.

A backlink, or inbound link, is a link on another website that points to a page on your site. Search engines use backlinks to discover pages and as one sign of how well known a business is. Google's spam policies forbid links bought or built to manipulate rankings.

By Pilotiko editorial team · Updated on

In short

  • A link from another site to yours, as opposed to internal links.
  • For local results, Google lists how many websites link to a business among the signs of prominence.
  • Buying or selling links for ranking breaks Google's spam policies.
  • Paid links get rel=sponsored; user-generated ones get rel=ugc.

What do sponsored, ugc and nofollow mean?

rel values Google recommends for qualifying links
ValueWhen to use itSmall business example
rel=sponsoredAds or paid placementsSponsoring a minor hockey tournament that links to your site
rel=ugcLinks in user-generated contentBlog comments and forum posts
rel=nofollowWhen other values don't apply and you'd rather not be associated with the linked pageLinking to a source you have doubts about

nofollow is still acceptable for paid links, but sponsored is preferred [2]. Google advises against adding nofollow to every outbound link, only to sources you don't trust [4].

Frequently asked questions

Is a backlink the same as an inbound link?

Yes. Backlink, inbound link and incoming link all describe a link from another website to yours.

Is buying backlinks illegal?

It is a matter of Google's rules rather than the law: buying or selling links for ranking is listed as link spam. A paid link should be marked rel=sponsored or nofollow.

Is a sponsorship link a bad backlink?

Not if it is qualified properly. Sponsorship is legitimate; the publishing site should simply mark the link rel=sponsored.

Do social media links count?

They can bring visitors. Links posted by users are the kind Google recommends marking ugc, so do not count on them to build search engine prominence.

How many backlinks does a small business need?

There is no official number. A handful of relevant links from sites tied to your trade or region is worth more than a pile of unrelated ones.

What if I already bought links?

Stop buying them and, where possible, ask for removal or for the links to be marked sponsored. Then put the effort into your content and local relationships.

Sources

  1. Google Search Central, Spam policies for Google web search (accessed on October 15, 2026).
  2. Google Search Central, Qualify your outbound links to Google (accessed on October 15, 2026).
  3. Aide Google Business Profile, Tips to improve your local ranking on Google (accessed on October 15, 2026).
  4. Google Search Central, Link best practices for Google (accessed on October 15, 2026).
  5. Google Search Central, In-depth guide to how Google Search works (accessed on October 15, 2026).

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