An infographic with a timeline of Google’s most important algorithm changes and updates from the last 2 years (from the beginning of 2009 to the end of 2010).
Showing its aims and events, such as when Personalized Search was introduced; the canonical tag; when the Caffeine update came on the scene; and chronicling the Black Tuesday, Black Friday and Mayday updates.
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Although Google, on first loading the home page, looks almost relatively untouched – well, the search box is a tiny bit bigger (which is also mapped in the infographic) – Google has had a massive overhaul over the last couple years which has dramatically changed the way in which we search, and many would say for the better.
Click on the image to see a larger version.