Google Algorithm Updates of 2013

NoDateUpdateNoticeable effectReferences
1January 22, 2013Panda Update 241.2% of English searchesSearch Engine Roundtable, Search Engine Land
2March 14, 2013Panda Update 25UnknownSearch Engine Roundtable, Search Engine Land
3May 9, 2013PhantomUnknownSearch Engine Roundtable
4May 22, 2013Penguin 2.02.3% of English US searchesSearch Engine Land, SEOmoz
5June 11, 2013Google Panda DanceUnknownSearch Engine Land
6June 11, 2013"Payday Loan" Update0.3% of English US searches, 4% Turkish searchesSearch Engine Land, Search Engine Roundtable
7June 28, 2013Panda Update 26UnknownSearch Engine Land
8July 18, 2013Panda RecoveryUnknownSearch Engine Roundtable
9July 26, 2013Unnamed UpdateUnknownSearch Engine Roundtable
10August 20, 2013Hummingbird Update90%Search Engine Land, Search Engine Roundtable
11October 4, 2013Penguin 2.11% of searchesSearch Engine Land, Search Engine Roundtable
12November 14, 2013Unnamed UpdateUnknownSearch Engine Roundtable
13December 17, 2013Unnamed UpdateUnknownSearch Engine Land
14December 19, 2013Authorship Rich Snippet UpdateUnknownWebmaster World, Moz

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