_ «Ah yes, the Amazon Sales Rank: that addictive bit of eye candy that can lift an author's spirits into the stratosphere one day and hurl him down onto the rocks the next. In all likelihood neither reaction is truly justified, because a book's Amazon Sales Rank is a temporary, relative thing, and does not mean what many authors think it does. If you want to get to the bottom of what your book's ASR means, you might start by thinking about what the ASR does not mean.
First, it does not reflect a cumulative sales count...» _
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