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Services like Compete and Quantcast provide information on competitive sites, but as far as I can tell only at the aggregated domain level.  Is there a similar service (paid or free) that provides this type of data - especially demographics - for a subdirectory? For example, if my competitor has widely different product categories and I suspect that the audience for Product B is very different from his site as a whole (which is mostly focused around his major product, Product A) is there any way to get info on that without actually owning the site and having access to Analytics/Facebook OpenGraph etc.?