Google SEO Ranking Factors 2013

Big Site Will Survive in The 2013

Google changed a lot in the search engine. Back links not the most important factors for increase keywords ranking. Page authority became very important.
page authority

Resource from SEOMOZ

Link relevancy and domain authority still very important when creating back links.

back links

Resource from SEOMOZ

How to Increase the Page Authority

1 Increase the single webpage quality
on-site seo

2 Real users share the links in Google plus are very important
google plus