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Two good suggestions so far, and both I had checked. Thanks KJ Rogers and Ryan Kent.

This is starting to look like it boils down to how much the new SEOmoz crawler sees content in the same way that Google does.

We did not make any site-wide changes and the URLs identified as duplicate in the report are valid URLs that actually hold similar content (keywords and so forth were changed for each version of a slightly different product through an Excel Concatenate construct to build the content). We have actually seen these pages climb in rank over the months since the content was added.

So, like I said, the sudden identification of these as duplicate by the moz crawler is suspicious to me. Not sure it sees things the way Google does.

I am told the crawler has been updated and wanted to know if anyone else is seeing the same thing I am.

SEOmoz reports show many months of no duplicate content problems. As of last week though, I get a little over a thousand pages reported as dupe content errors.

Checking these pages I find there is similar content (hasn't changed) with keywords that are definitely different. Many of these pages rank well in Google, but SEOmoz is calling them out as duplicate content. Is SEOmoz attempting to closely imitate Google's perspective in this matter and therefore telling me that I need to seriously change the similar content?

Anyone else seeing something like this?

Thanks for the input Marcus!

Hi Marcus,

Perhaps I'll need a few glasses myself to decipher your message? I kid I kid.

I believe the structure you are referring to is what I currently have. The main product page, and additional pages with paginated user reviews. The only difference is your example list static URLs for the paginated reviews vs using a page # parameter as I have.

And could you please clarify:

"if you use rel canonical back to your main product page you are losing the benefit of all of those additional reviews."

What would happen in a scenario such as:

1. I'm a spider, crawling through your product review pages
2. On the 2nd page, a very nice, useful, thorough product review
3. That 2nd page rel canonicals back to the main product page
4. There is a SE query matching the 2nd page product review exactly

Would the main product page be listed on the SERPs, or since there was a rel canonical URL of the main product page, it poofs and disappears altogether?

I apologize for the lengthy post, but I need help!

Here is my current structure for product reviews:

My product pages displays a set number of user product reviews before displaying a link to "see all reviews". So:

http://www.domain.com/product/product-page

Has product details, specs (usually generic from manufacturer) and 5 user product reviews. If there are more than 5, there is a link to see all reviews:

http://www.domain.com/reviews/product-page?page=1

Where each page would display 10 user product reviews, and paginate until all user reviews are displayed.

I am thinking about using the Rel Canonical tag on the paginated reviews pages to reference back to the main product page. So:

http://www.domain.com/reviews/product-page?page=1

http://www.domain.com/reviews/product-page?page=2

http://www.domain.com/reviews/product-page?page=3

Would have the canonical URL of:

http://www.domain.com/product/product-page

Does this structure make sense? I'm unclear what strategy I should use, but currently the product review pages account for less than 2% of overall organic traffic.

Thanks ahead of time!