Every year, Google makes several changes to search. In 2018, they reported an incredible 3,234 updates — an average of almost 9 per day, and more than eight times the number of updates in 2009. While most of these changes are minor, Google occasionally rolls out a major algorithmic update (such as Panda and Penguin) […]
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https://blackstormrss.com/a-history-of-major-google-algorithm-updates-changes-roofers-should-know/
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