Years ago, when search engine optimization was in its infancy as a profession, you could build a bunch of back-links, get those keywords in the right spot on the page, and you had a pretty easy time getting to the top of the search engine rankings. But, staying near the top of the search engine rankings is becoming increasingly difficult. While back-links still remain the foundation for keeping you ranking high, the fact is content is quickly playing an increasingly strong role in how you rank.
How Google Evaluates Your Content
The most important thing for SEO as far as content goes