We keep hearing about website internal duplicate content issues but many of us are sincerely unaware of the fact that that’s what our own website also suffers from. Why?

* most of the websites are made with the help of third-party site creators that create duplicate URLs to same content and we don’t know about that;
* sometimes webmasters just lack SEO knowledge. For example, they might be unaware of the fact that URLs are case sensitive and www.yoursite.com/page1 and www.yoursite.com/Page1 are handled as two different pages with the same content.