As far as page rankings for a website go, Google have a very complex algorithm. It is worthwhile to learn as much as you can about how the algorithm works because Google drive the most traffic to the sites that rank at the top of their organic results.

This is where Link Popularity comes into the picture.

By having links to your site through hundreds or even thousands of Blogs, you will find that you will gain a significant improvement in your ranking. Search Engines thirst for the valuable content that blogs contain and the way they link into other relevant websites, so by having a blog link to you this is a great quality link.