So, you’ve heard the term content is king, you know content marketing is a great way to improve your SEO, but are you following the one single rule that will lead to success?

Brafton share this rule, along with a brief history of content and SEO, in this infographic.

Here’s a quick summary of what’s included:

• It starts with content and promotion
• Then everyone bought a computer
• Search engines organise the internet
• Marketers start optimising websites for search engines
• Blackhat SEO emerges
• Google starts bringing down the hammer
• Brands rejoice, but still struggle
• Long-tail keywords come in to play
• The customer comes first (this is the mentioned single-most important rule, in case you didn’t realise)

Check out the infographic for more detail.