Web site owners might be amazed to learn that one of the biggest sources for duplicate content isn’t externally, but rather internally.

Certainly, popular sites and blogs that syndicate a lot of content have to deal with external duplication, but as I already touched on external duplicate content, we know that there are steps to minimize those challenges and to establish your site as the canonical source.

Internal, or on-site, content duplication tends to come in a few key ways, the first of which is within the key page elements. The second is from the content itself; similar to e-commerce sites using stock product copy, you may be using your own copy over and over again on your site. Third, it simply may come from too little differentiated copy.

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