Google Penguin refers to a set of algorithm updates and data
refreshes that the Google Search Engine periodically releases, that are aimed
at improving the value of search query results for users.
This is done to prevent spamming the page index algorithm (
called spamdexing or Black Hat SEO) to prevent irregularities in search results
to prevent from being successfully ranked high among query results. Spamdexing
can be done by techniques such as Key-stuffing, invisible text display,
link-spamming or even displaying copyright items from high-ranking websites and
more.
Google Penguin is different from similar enhancement
algorithm such as Google Panda and Google Hummingbird such that it not only
aims at preventing companies that attempt to “boost” their search engine
ranking index but also “penalizing” them.
The first such algorithm published in April 2012
and was estimated to affect 3% of all English-language website.
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