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Understanding where the Google algorithm has been is vital to seeing where it is going. Here's a brief rundown by Shelby Larson of Ember Dragon marketing agency of Panda, Penguin, MobileGeddon and Hummingbird.
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Understanding where the Google algorithm has been is vital to seeing where it is going. Here's a brief rundown by Shelby Larson of Ember Dragon marketing agency of Panda, Penguin, MobileGeddon and Hummingbird.
[ Ссылка ]