How many links should appear
Out of the box everything is set low: at most five links per page, one per target, one per paragraph, and only the first occurrence of a word is linked. That is deliberate. A text in which every other word is blue reads like an advert, and a search engine rates it that way too.
The four limits
- Per page: how many links may appear in one post in total
- Per target: how often the same target page is linked from one post
- Per paragraph: how many links may stand in a single paragraph
- Incoming per target: how many links a target page may receive in total — 0 means unlimited
What is never touched
- Headings
- Text that is already inside a link
- References set by hand
- The page itself as a target
Scope
Under “Rules” you also decide which post types are linked at all and where linking is allowed — in the post text, in excerpts, in widgets. Individual items can be excluded.