Duplicate content in SEO is truly any web content that is measured to be similar to another site. Search engines have actually implemented new filters specifically to observe these types of cunning attempts to improve site's search engine page rankings .Search engines riddle for duplicate content by using the same means for analyzing and indexing page ranking for sites, and that is through the use of crawlers or robots. These robots or crawlers go through different websites and catalogues these sites by reading and saving information to their database. Once this is done, these robots then analyze and compare all the information it has taken from one website to all the others that it has visited by using certain algorithms to find out if the site's content is relevant, and if it can be considered as a duplicate content or spam. Although you may not have any intentions to try and deceive search engines to improve your site's page ranking, your site might still get flagged as having duplicate content. One way that you can avoid this from happening is by checking yourself if there are duplicate contents of your page. Just make sure that you avoid too many similarities with another page's content for this can still appear as duplicate content to some filters, even if it is not considered to be a spam.
