It’s old news to many SEOs worth their salt now, but since early 2011 (Panda update) duplicate content has been a big no no. This has changed a number of old school (read: crappy) SEO tactics like: spinning content, article submissions, advertorial abuse and more recently over-optimisation of press releases. There is one thing that I believe most short-sighted or under experienced digital marketers seem to overlook time and time again:
“Our advice for publishers continues to be to focus on delivering the best possible user experience on your websites and not to focus too much on what they think are Google’s current ranking algorithms or signals” (Source: Google