Prior to the recent arrival of Penguin 4.0, it had been nearly two years since Penguin was last updated. It was expected to roll out at the end of 2015, which then became early 2016. By the summer, some in the industry had given up on Google ever releasing Penguin 4.0. But why did it take so long?
I’d argue that criticism directed at Google is in many cases unjustified, as people often take too simplistic a view of the task at hand for the search engine.
Detecting and dealing with paid links is a lot harder than many people think, and there are likely good reasons why Google took longer than hoped to release the next iteration of Penguin.
Here are some of the challenges Google may have faced in pushing out the most recent Penguin update.
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