What is Google Penguin?

Google Penguin is a codename for a Google algorithm update that was first announced on April 24, 2012.

A webspam update in April 24, 2012 by Google and given the code name Penguin update that includes spamming factors such as keyword stuffing, un-relevant contents or links, number of artificial links etc. It affects 3.1 percent of English search queries.

Google launched the Penguin update in April 2012. This focused more on tackling spam and penalizing sites that didn't follow Google's quality guidelines. Google Penguin also looks to tackling Black hat SEO techniques that many sites use to increase their search engine ranking. This includes techniques like;

Keyword/keyphrases stuffing within content.
Comment spamming by including links using the same anchor text.
Links from article directories and directory listings.
Having excessive/unnatural internal links.

Google Penguin specifies a set of algorithm updates for the Google search engine and helps to enhance the value of search query results for users.

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.

use to tackle spammy links