It happened when Google Penguin was rolled out, because Penguin’s claimed focus was on better content itself to combat backlink spam practices that abused PageR

It happened when Google Penguin was rolled out, because Penguin’s claimed focus was on better content itself to combat backlink spam practices that abused PageRank descendants. It sort of worked but there were entire valuable websites with great content (but according to Penguin comprised of non-rich content) that were dropped pages deep into the search results. Recipe websites were among these. There exist reams of articles on how to fix your content to get Penguin to like it, and the buried recipe nonsense started exactly at the same time. https://en.m.wikipedia.org/wiki/Google_Penguin https://en.m.wikipedia.org/wiki/Google_Penguin