SEO and Duplicate Content Analysis is important to know. If your site does not have all original content then you will pay a heavy price. At some point the search engines will come across your website and evaluate it in it’s entirety. One of the things they look at is if your site contains only original content. If there is any copy write that has been found on the internet before you published it then that is called plagiarism. If some of this exists on your site you will be penalized with negative marks from the search engines. That will result in your ranking not moving up to where it could climb to.
SEO and Duplicate Content Analysis is important as well as making sure your content is also authoritative. You want to be sure that your site puts you in a position of authority. Having more authoritative content is a very good thing. It shows the search engines that you are something of a “know it all” on the subject of whatever your site is all about.