Changes to the algorithms that produce search engine rankings can place a heightened focus on relevance to a particular topic. While some backlinks might be from sources containing highly valuable metrics, they could also be unrelated to the consumer's query or interest. An example of this would be a link from a popular shoe blog (with valuable metrics) to a site selling vintage pencil sharpeners. While the link appears valuable, it provides little to the consumer in terms of relevance.
Keep your most important search pages (the pages you are using to target your most valuable keywords) “high up” in your information architecture: this means linking to them often in navigation elements and linking to them whenever possible from your most linked-to pages (e.g., make sure your home page and your site’s version of our hit snow study are linking to the most valuable pages on your site from a search perspective – your “money pages”). http://y2u.be/0Y6hluMPulU