At a recent library workshop, I reminded the audience that they can always check their book's sales rank on Amazon, both in direct sales and by tracking how it compares to similar titles.
Now, Amazon has announced, Amazon Author Rank, They call it "the definitive list of best-selling authors on Amazon.com." They use BookScan sales data to display your ranking.
While the list of top 100 authors and top 100 books in specific genres is intended to help readers find best-selling books, it is also a useful tool for you as an author.
You can see your Amazon Author Rank trending over time in Author Central.
You can find your Amazon Author Rank in Author Central under the Rank tab.
Historical rank data is new, since the service just started on September 28, 2012,
but it should be fun to track your book's success over time.
Here's a snapshot...