Jun 12
20
So, first things first! What is the difference between PENGUIN and PENGUIN 1.1? The Penguin update was a change in a module within the search engine algorithm, while Penguin 1.1 is merely a data refresh within that same module. Matt Cutts clearly explained this in his post way back in 2006.
Follow this link:
Understanding Penguin 1.1: Be Safe from Updates in 3 Easy Steps