Google launched the Penguin 4.0 Update in April 2012 to better catch sites deemed to be spamming its search results, in particular those doing so by buying links or obtaining them through link networks designed primarily to boost Google rankings.
Penguin is the code name for Google algorithm. Its primary target is to diminish the positioning of that site that are damaging the Google Webmaster rules. These rules are violated by utilizing black hat methods such as cloaking and stuffing.
Google launched the Penguin 4.0 Update in April 2012 to better catch sites deemed to be spamming its search results, in particular those doing so by buying links or obtaining them through link networks designed primarily to boost Google rankings.
Google Penguin refers to a set of algorithm updates and data refreshes for the Google search engine that the company periodically initiates to help enhance the value of its search query results for users.