traffic for the site.Google Penguin 4.0 Update To find out if a website has been affected by a Google penalty, website owners can use Google Webmaster Tools
Google penguin updates past, present and future
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In April 2012, Google launched Penguin algorithm update – aimed at decreasing the rankings of websites that manipulated the number of backlinks pointing to them. This update, had a huge impact, changing the Internet we used to know for good.