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Hello Everybody,
I manage an e-commerce website and we have a duplicated content issue for subcategory. The scenario is like this: /category1/subcategory1
/category2/subcategory1
/category3/subcategory1 A single subcategory can fit multiple categories, so we have 3 different URL for the same subcategory with the same content (except of the navigation link). Which are the best practice to avoid this issue? Thank you!

Hello Everybody,
with the latest seomoz index update for OSE my website had a big drop in Domain Authority and MozTrust and at the same time a drop in SEO traffic. It seems to be a correlation between the drop in the Seomoz metric and SEO traffic, infact from the 9th of August we lost the 20% of traffic (the 2nd of august our DA and MT was normal, the 15th Seomoz show the drop). Unfortunately it seems that this trend is valid only for my website and not because of a Seomoz index error: my competitor still have the same DA and MT. I will check for sure if, with the next index update, there will be some change in DA or MT, anyway which are your suggestion? How can I know what has happened to my link profile and the cause of this big change? Advice are welcome!