There is a fear for most of the webmasters and it is the scraping of their contents. Most of the webmasters will say that their contents are copyrighted and cannot be used by other webmasters. But you cannot find out all the copiers of your contents and someone may be using your contents in some corner of the internet. But it is not harmful to you unless and until Google will not affect your website from the SEO point of view.

But Google is a very smart ass and therefore they can effectively catch the copier or the content theft and they think it is time to punish, then they can punish the copier. But there always have doubts in the mind of webmasters whether Google can distinguish between the owner of the original content and the copier.

Well, Google can easily identify the right owner of the content and the original content website. The problem of duplicate content may be within your own website or may be inter website duplicate content. You can avoid the duplicate content within your website but if someone copy your details, then what will you do? Well, you can ask them to put a link to the original content and this is the most effective way to make it easy for Google to identify the original content website.