Your ultimate cheat sheet to Google’s algorithmic changes and penalties 1. Panda Launch date: February 24, 2011 Hazards: Duplicate, plagiarized or thin content; user-generated spam; keyword stuffing How it works: Panda assigns a so-called “quality score” to web pages; this score is then used as a ranking factor. Initially, Panda was a filter rather than part of Google’s ranking algo, but in January 2016, it was officially incorporated into the core algorithm. Panda rollouts have become more frequent, so both penalties and recoveries now happen faster. 2. Penguin Launch date: April 24, 2012 Hazards: Spammy or irrelevant links; links with over-optimized anchor text How it works: Google Penguin’s objective is to down-rank sites whose links it deems manipulative. Since late 2016, Penguin has been part of Google’s core algorithm; unlike Panda, it works in real time. 3. Hummingbird Launch date: August 22, 2013 Hazards: Keyword stuffing; low-quality content How it works: Hummi...
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