I was curious about the "domain authority" point as well. He linked to another blog post at the bottom of the article that talks about that: http://www.seomoz.

I was curious about the "domain authority" point as well. He linked to another blog post at the bottom of the article that talks about that: http://www.seomoz.org/blog/my-personal-opinion-90-of-the-rankings-equation-lies-in-these-4-factors http://www.seomoz.org/blog/my-personal-opinion-90-of-the-ran...