- Navigation bar in every page
- Position in the site
- Link to home page in every page
- User is advised of links pointing to external domains
- Analysis of links graph (vertical, horizontal, transverse navigation)
"All the links are equal, but some links are more equal than others"
- extensional vs intensional links
- link to a "concept space" to implement the cognitive level
- requires inspection by an expert
- remains quite subjective