Content revised 20 October 2026.
Backlinks can come from editorial references, directories, partnerships and paid placements. The label alone doesn't tell you whether a link is useful or appropriate.
There is no universal list of seven link types
Marketers organise backlinks in different ways. One list describes where a link appears; another describes how it was earned or which HTML attributes it uses. Keep those questions separate. A link from a directory can be a useful business reference or an irrelevant placement created only to influence rankings.
Compare common contexts
- An editorial reference points readers to information the publisher considers useful.
- A genuine business directory can help people find accurate company details.
- A supplier or partner link can explain a real commercial relationship.
- A sponsored placement is paid promotion and needs appropriate link qualification.
- A user-generated link may appear in a comment, forum post or community contribution.
Attributes describe the relationship
Values such as sponsored, ugc and nofollow help qualify outbound links. They don't turn a misleading page into a good recommendation. Review both the HTML and the reason the link exists. A large count of a particular link type is not a substitute for relevant content or a working website.
Build a useful review sheet
Record the linking page, destination, context, relationship and action needed. For example, a genuine supplier reference may need updated product information, while an unqualified paid placement needs a different discussion. That approach gives you a decision to make instead of a collection of labels to chase.
Official guidance: Google’s outbound-link qualification guidance.