The following timeline highlights what I believe to be the most important announcements of changes to the Google Algorithm since 2011 up until Penguin 2.0. All of these announcements and details are directly from Google themselves or Matt Cutts (one of the their leading engineers). All items on the timeline are algorithm changes, rather than just listing changes in search functionality (structured data is the odd one out as it’s both). Agree? Disagree? That’s what comments are for…..