When establishing a link popularity campaign, an important question to ask yourself is: Are your customers able to navigate around your site with ease? If not, neither are the search engines. It's important to have productive incoming and internal links for a successful link popularity campaign.
Proper navigation within your own website affects ranking
Interlinking websites have always been highly valued by web surfers as a way to find relevant, related information online. Today the search engines place more emphasis on inbound links to your site, simply because it seems to reflect the value that your peers have placed on your site - it's like a vote of confidence.