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** You will see some significant updates by prominent search engines, mainly Google; aimed at improving aspects like geographic intent, end-user data, {{w|content farm}} combating, etc.
* What are some of the several competitions specialized in SEO?
** Sort the full timeline by "Event type" and look for the group of rows with value "{{w|SEO contest}}".
** You will see a number of notable contests launched in several countries.
* What are some numbers illustrating the evolution of search engine?