Google is always trying to serve the best and most relevant search results to satisfy their users. Part of their method involves looking at the length of content for a target keyword. Previously, sites with a relatively low amount of content could compete against sites with lengthier and, theoretically, better content. Another aspect that the Panda update looks at is duplicate content. Essentially, if two or more pages on a site have the exact or very similar content, Google will devalue these duplicate pages in search rankings. In February 2011, the Panda update to their algorithm sought to favor sites with more content than those with “thin” content. The most recent version reportedly rolled out as of July 2015 (Panda 4.2), but has since been rolled into Google’s ongoing algorithm updates. This is one of the factors that makes quality content such a huge factor in SEO.