Steve1960 writes "For $10,000 to $15,000, you, too, can be a best-selling author — on Amazon.com. Here's a cautionary tale on how easy it is to game Amazon's sales ranking numbers, and why authors who pay for this might be wasting their money. 'The targeted marketing campaigns contribute volatility to sales-ranking numbers that are inherently unstable. Outside the top 1% or so of books, few sell multiple copies a day, so little separates books with rankings tens of thousands, or even hundreds of thousands, apart. Morris Rosenthal, an author and publisher based in Springfield, Mass., who has studied the Amazon charts, says a day without a sale can send a book ranked 10,000 to as low as 50,000.'"
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