This day in search marketing history: January 21

Google explains the “core” algorithmIn 2016, Google’s Andrey Lipattsev explained the “core” algorithm.
This happened following the news about Panda becoming part of Google’s core algorithm. SEOs wanted to better understand what being part of Google’s core algorithm meant.
Put simply, it meant that an algorithm is consistent enough that Google doesn’t have to worry about it because it’s been tested, works the way it should, and won’t req