@JacobhineFeb 21.2012 — #Use a duplicate content is a bad technique and your website will never get good result because of using duplicate content, search engines give most importance to quality content.
@rtretheweyFeb 23.2012 — #When the search engines discover pages that are identical or substantially duplicate content, they attempt to pick the best version (ie. "canonical") and filter out the other duplicates. While there is no explicit penalty for duplicate content at the page level, having pages filtered for this reason can disrupt the rankings for your site in other ways. So, as Jacobhine said, you want to avoid duplicate content on your site. If you must have duplicate pages within the sites you control, use the rel="canonical" tag and point it at the page with the original version. Do not copy substantial portions of pages from other sites. If copying a small snippet isn't sufficient, refer users to the other site with a conventional link. Good luck!
@iPhoneappsFeb 27.2012 — #If you have similar content on your website pages or you have copied the content from somewhere, then the Search Engines will penalize your website due to the same content. This will definitely ruin your position in SERPs. Like after Panda update, Google has become very strict regarding the content . If you have fresh, unique content then you will rank well. So keep in mind "DO Not Copy or Use Similar Content, Just Create Fresh Content and Make Your Position Strong Online"....
@mayson_ratMar 09.2012 — #Duplicate content is a NO! You can be liable in plagiarism and can be banned when you used those in your website. Always make a unique original articles.