Though websites with duplicate content usually don’t get in trouble with the law, most search engines will not list results with duplicate content. If you either are thinking about creating a website or have already done so, then one of the things you are almost certainly thinking about is web-traffic and how to get more people to visit your site. Given that many, if not most people use Google to search for information on the internet, it makes sense to have content on your website that will show up high on the Google results page; it is generally agreed-upon that results beyond the third page tend to be less relevant to the search criteria, and most people don’t check anything beyond the third page as a result. For that reason, it’s important to understand the concept of Search Engine Optimization, abbreviated SEO.
The basic idea behind SEO is that Google (or any other search engine) wants to give its users quality results, so they want to give their users multiple options through variety so their users can choose the result that is most relevant to their search.
Unless you seriously and blatantly violate terms of service, by plagiarizing for example, your website will not be removed or censored, which are the actions that really fall under the “penalty” label. That said, if you suspect that this is happening to your website, you can solve this problem by adding original content that search engines can find and label as original rather than duplicated.
This sounds simple, but you may find that many ideas that you think are original have already been expressed by someone else. You want to avoid plagiarism above all else, because that can get you and your website into real trouble. Use your own words whenever possible, and be sure to give credit to your sources; this will help to give your website some of your personal touch and add some originality even if some of your content is duplicated.
Bellow is the video that explains this issue in details.
What’s your opinion about Duplicate content and Google penalty? Do you also see many RSS scraper site in Google search result? Do you think Google is doing right thing by filtering most of the RSS scraper site from search engine?