At the very beginning of 2016, while all the webmasters and SEOs were patiently waiting for something that could potentially be the next generation of the Penguin update (which is known as an anti-spamlink part of search engine ranking modifications), we all have become witnesses of something that undoubtedly will remain a historical event in Google’s algorithm update continuity. This was a series of core algorithm updates, which was responsible for considerable SERPs fluctuations in the first two weeks of January. They were described by Algoroo tracking tool as the biggest ever.