Internet Marketing Strategy 2.0

Andrew Gouty analyzes the history of SEO, while highligthing how increasingly important it is to look less at "SEO tactics" and more at producing truly quality content.

The article cum infographic reviews the main five SEO eras, from the 1994-99 Meta era, and through the PageRank years (2000-2003), the Florida era (2004-2009), the Content Era (2010-12) and the Present Day.

A good, fact-supported overview of what really counts when it comes to content visibility on the web.

Useful. Data-rich. 8/10

Full article + infographic: http://www.raidious.com/content-marketing/the-history-of-seo-effectiveness/