1. Cross-linking is the process of linking one site to another site.
2. It provides users with reference sites that contain the content related to the search.
3. The 2 websites cross-linking do not be owned by the same person.
4. In other words, cross-linking is a barter wherein I link to you, and you link to me.
5. It could be a 2-way link or a 3-way link. In a 2-way link site, A links to site B, and site B links to site A. In a 3-way link, site A links to site B, site B links to Site C, and site C links to site A.