Why do we think this is important? If your site is doing well and with proper internal linking throughout your site, you can have a measurable metric. If you increase your average, will you rank better? or will search engines crawl your site better? If you publish new articles, how many links should you include? A lot of these are ideas in a dark cloud that most people don't know the answers to. We wanted to provide a metric to help you understand and check off, whether your site is doing great or bad.