Obviously, opinions will differ on best ways to rank effectively in search organically. A lot of successful SEO’ers have there set methods depending on if it’s Global or Local Search Engine Results Pages (SERP’s), they all involve structure and content as the centerpiece, followed by relevance, quality, sharability, and readability. SEO can be as hard as you make it and is performed best when you make the most sense from all points of view. Search Engine’s want a subject explained in the proper hierarchy with all variations included. They don’t punish you when you do thinks out of relevance.
SEO can be divided into several categories
Content, Structure, Relevance & Date
Sharability / Engageability, Simply put Convertibility