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I don't think this is actually displaying the top selling books in a particular city. Instead, I think it is displaying the top selling books "about" a particular city. Unless I missed it, I don't believe ECS yields any data about the top selling books by city.

David Dodd

I think Paul is right. Those titles seem to be quite suspiciously ABOUT the cities, although that could be an indicator of popularity too, I suppose...


I think Paul (above) is correct. Amazon already exposes top items and unique items purchased by groups of customers in a feature called Purchase Circles.

For instance, here are the results for Seattle:


Hi. I'm the creator of the site. You're right in that it displays books more "about" a city than "in" a city. In general, it finds the top books about a city by using Amazon PowerSearch (available via AWS). I found this does a pretty good job of getting a good list of books that somehow relate in a significant way to a specific city.

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