Explain link popularity?

Explain link popularity?

Link popularity refers to the quantity and quality of incoming links that point to your website.

There are typically two types of link popularity: Internal and External.
Internal link popularity typically refers to the number of links or pages within a web site and external link popularity refers to the number of links coming from the other websites or web pages.
Most of the search engines use link popularity as a factor in determining a website’s search engine ranking. The more the incoming links to your web site the higher its search engine ranking.