| http://www.w3.org/ns/prov#value | - Not surprisingly, the most prominent player in the field is Amazon, which in January 2011 launched the Kindle Singles program, billed as an outlet for ???ideas expressed at their natural length.??? About two hundred previously unpublished titles, ranging from five thousand to thirty thousand words in length, are currently listed at prices between $0.99 and $4.99.
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