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Disclaimer: I just answered a question just like this on another thread, so I literally copied and pasted my response from there, and edited where necessary. The SEOmoz web app uses a similarity threshold of 95% of the html code. This takes everything on the page, both hidden and visible into account. In this case, it's counting all of the navigation and sidebar as well, which is significant. What's left of the unique content - the part that matters, makes up less than 5% of the code.Here's a tool you can use to check the similarity: http://www.duplicatecontent.net/ I ran the pages through a couple of tools which showed 98% similarity. (but only 75% text similarity, which is good, but not great) SEOKeith is absolutely right that there's very little on those pages to help them rank. Without text, you're fighting an uphill battle. Hope this helps! Best of luck with your SEO.