"To say that Search Engine Optimization is a volatile industry would be a gross understatement. The ever-changing landscape of search rewards the most inquisitive, innovative and agile, while it punishes the devious and the stubborn. It seems that now, as 2012 comes to a close, the SEO industry is once again on the brink of a tidal shift that few are pivoting for.
While the aspects of technical SEO, specifically site architecture, will most likely never go away, many of the tactics that used to win at search simply don’t work anymore. At the same time, previously weaker or unproven tactics like social media and content marketing continue to grow in effectiveness while influencing SEO tactics.
The result is a new discipline: inbound marketing, which combines SEO, content marketing and social media.
One common thread amongst the three components of inbound marketing is content (which is different than content marketing):
1) Content Marketing: the pursuit of developing and distributing content that solves customer problems and generates leads.
2) SEO: the pursuit of getting your content to appear in the search results.
3) Social Media: a delivery system for your content".
Via Antonino Militello