Ever since Google took the throne of “world’s best search engine” a decade ago, people have worked hard to try to get their sites to rank well. Unfortunately, many unscrupulous companies try to cheat their way to the top and Google is constantly tweaking their system in order to fight back.
The folks at SEO Book have created a very cool graphic illustrating how this battle has unfolded over the years. If you ever wanted to know more about how Google works, this is a good place to start.
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