author rank

Got the following email from Amazon:

Today we have added a new feature, Amazon Author Rank, the definitive list of best-selling authors on Amazon.com. This list makes it easy for readers to discover the best-selling authors on Amazon.com overall and within a selection of major genres. Your Amazon Author Rank is 44,881 in Print Books.

It is a new feature so, with a very limited past horizon, this rank seems to be moving wildly! (For instance, it is now 36,776, just a few hours later.) But so are the individual book sales. Hence a clear lack of smoothing in the indicator.

Another interesting feature of this Author Central facility is the display of US sales by district, Not only because it shows that New York and San Francisco are the cities where I sell the most books (great!) but also because it uses the notion of “combined areas”, aggregating “the copies sold in these sparsely populated areas in order to obscure any single retailer’s sales”. A good display of data protection (even though the level of aggregation sounds too high to me, resulting in “combined areas” being the 3rd highest sale area. And including Gainesville, Florida and Ithaca, New York, the two latest locations of George Casella, in this combination!

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