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| 2001 || December || Review || Google releases its first annual [[wikipedia:Google Zeitgeist|Google Zeitgeist]].<ref name=official-google-history/>
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| 2002 || || || The {{w|Googlefight}} website (unaffiliated with Google), that allows people to compare results of two search queries on Google, likely launches in this year. It is given permission by Google to use the name sometime during the year.<ref>{{cite web|url = https://www.googlefight.com/about.php|title = About us|publisher = Googlefight|accessdate = June 8, 2019}}</ref>
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| 2002 || January 8 || || The term {{w|Googlewhack}} is introduced by Gary Stock for a search query that has exactly two words, without quotes, and returns exactly one result.<ref>{{cite web|url = http://unblinking.com/heh/googlewhack.htm|title = Googlewhacking: The Search for 'The One'|last = Stock|First = Gary|date = January 8, 2002|accessdate = June 8, 2019}}</ref>
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| 2002 || September || Search category || Google launches [[wikipedia:Google News|Google News]].<ref name=official-google-history/>
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| 2018 || August 1 || Search algorithm update (ranking) || Google rolls out a core algorithm update dubbed "Medic" by SEO observers.<ref name=moz/> The algorithm largely affects your money or your life (YMYL) sites, in particular health/medical websites, with some sites seeing significant improvements and others seeing significant declines.<ref>{{cite web|url = https://moz.com/blog/googles-august-1st-core-update-week-1|title = Google's August 1st Core Update: Week 1|date = August 9, 2019|accessdate = January 20, 2019|publisher = SEOMoz|last = Meyers|first = Peter J.}}</ref><ref>{{cite web|url = https://www.seroundtable.com/google-medic-update-26177.html|title = Google Medic Update: Google's Core Search Update Had Big Impact On Health/Medical Sites|last = Schwartz|first = Barry|date = August 8, 2018|accessdate = January 20, 2019|publisher = Search Engine Roundtable}}</ref><ref>{{cite web|url = https://www.mariehaynes.com/the-august-1-2018-google-update-strongly-affected-ymyl-sites/|title = My thoughts on the August 1, 2018 Google Algorithm Update|last = Haynes|first = Marie|date = August 5, 2018|accessdate = January 20, 2019}}</ref>
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| 2019 || March 12 || Search algorithm update (ranking) || Google releases the March 2019 core update, a broad core algorithm update. SEO chatter suggests the update mainly affects YMYL sites, but Google claims that the algorithm is a broad core algorithm update and not targeted at any category.<ref name=moz/><ref>{{cite web|url = https://searchengineland.com/google-has-released-a-broad-core-search-algorithm-update-this-week-313905|title = Google released a broad core search algorithm on March 12. A rare Google confirmation came related to a Google search algorithm update this week. Google restated previous advice that there is no fix if your site was negatively impacted.|last = Schwartz|first = Barry|publisher = Search Engine Land|date = March 13, 2019|accessdate = June 8, 2019|publisher = Search Engine Land}}</ref><ref>{{cite web|url = https://www.seroundtable.com/google-march-2019-core-update-27259.html|title = Google Names The 3/12 Update The "March 2019 Core Update"|last = Schwartz|first = Barry|date = March 15, 2019|accessdate = June 8, 2019|publisher = Search Engine Roundtable}}</ref>
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| 2019 || April 5 and April 7 || Search algorithm update (indexing bug) || Due to a bug, Google seems to drop about 4% of pages from its search index on April 5 and April 7.<ref name=moz/><ref>{{cite web|url = https://moz.com/blog/how-bad-was-googles-deindexing-bug|title = How Bad Was Google's Deindexing Bug?|last = Meyers|first = Peter J.|date = April 11, 2019|accessdate = June 8, 2019}}</ref>
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