Duplicate Content

Google Webmaster said about Duplicate Content :

Duplicate content generally refers to substantive blocks of content within or across domains that either completely match other content or are appreciably similar. Mostly, this is not deceptive in origin. Examples of non-malicious duplicate content could include:

• Discussion forums that can generate both regular and stripped-down pages targeted at mobile devices
• Store items shown or linked via multiple distinct URLs
• Printer-only versions of web pages

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 But, there are so many theories about The Duplicate Content, and possible penalties for using the same content in more than one place in the same Blog or Site. But most of the theories are 100% unproved.
If you are still curious about it, just click here.

We should realized that basically, Google wants to offer us a wide variety of results for any given search result. If our blog post is not already ranked in the top 10 results for a specific keyword phrase, we can easily achieve an “indirect” top ranking by submitting the post to EzineArticles.com as an article with a keyword rich article title.(Problogger.net