Link popularity and link quality are very important because every major search engine now considers them as a part of their ranking algorithms. If you don't have links, you won't rank well for competitive keywords.

Link popularity consists of:

• Number of links
• Quality of links
• Number of times people click on links to your site
• How long end users visit your site
• How often people return to your site
  

• Continue navigating your site?
• Link to your site?
• Bookmark your site?
• Return to your site?