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[[Google Instant]], real-time-search, was introduced in late 2009 in an attempt to make search results more timely and relevant. Historically site administrators have spent months or even years optimizing a website to increase search rankings. With the growth in popularity of social media sites and blogs the leading engines made changes to their algorithms to allow fresh content to rank quickly within the search results.<ref>{{cite web|title=Relevance Meets Real Time Web |publisher=[[Google Blog]]|url=http://googleblog.blogspot.com/2009/12/relevance-meets-real-time-web.html }}</ref>
In February 2011, Google announced the infamous "Panda Update", which penalizes websites containing content duplicated from other websites and sources. Historically websites have copied content from one another and benefited in search engine rankings by engaging in this practice, however Google implemented a new system which punishes sites whose content is not unique. <ref>{{cite web|title=Relevance Meets Real Time Web |publisher=[[Google Blog]]|url=http://googleblog.blogspot.com/2011/02/finding-more-high-quality-sites-in.html}}</ref><ref>{{cite web|title=Relevance Meets Real Time Web |publisher=[[Simple SEO Group]]|url=http://www.simpleseogroup.com/seo-in-2012-vs-2011/}}</ref>
== Relationship with search engines ==
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