Link Building

Link Building: What Are Co-citation and Co-occurrence?

When Google was launched back in 1998, “link popularity“ was the core factor used in evaluating a website‘s authority to give users better search results. However, when users started manipulating the system and using bad link building practices, Google was challenged to remove these websites as spam. Since then, Google has experimented and launched several updates like EMD, PMD, LSI, Penguin, and Panda with anti-spam algorithms. They even began ranking sites without backlink relevance, which Matt Cutts said caused much worse results.