Much has previously been written about the Google Penguin updates, and the crash these have had on websites and businesses. Other than clean up the excellence of Google's directory what else could the purpose of Penguin be?
Much like the icebergs that so often enclose penguins, the Penguin updates have much, much more going on underneath the surface. In order to fully understand how an update works, we also need to understand the reason behind it.
SEO has had a rough year. In adding up to declarations of its premature death every few weeks, algorithm changes following algorithm changes on top of algorithm updates on top of lists of wherever from 25-75 monthly tweaks to Google investigate.
Tweaks, changes, and updates destined to not just pick up the general quality of the index, but also apparently to improve the quality of the manufacturing, the quality of SEOs, their tools, and their services.
There had always been sort of an oblique safety in the idea that if confident SEO tactics were hidden well sufficient you could get away with them even if everybody knew what you were doing. Google was focusing all of its labors at policing arduous spammers and TOS violators.