If you’d like to make your site more visible, one of the primary things you need to do is to increase your link popularity. Link popularity, to put it simply, is a measure of how many legitimate links point to your site, how good those links are, and how much apparent value they add to your site.
Link popularity plays a critical role in determining how visible your site is in the search engines. In fact, some search engines will drop you if you don’t have at least one verifiable link. Note that link popularity is not just the number of links that point towards your site, but also a measure of the quality of those links.