| http://www.w3.org/ns/prov#value | - Self-publishing can sound like an easy step to bestsellerdom.The American author Hugh Howey is the latest to fly from obscurity to fame with his post-apocalyptic hit Wool, which began as a digital ''novelette'' in 2011 and grew into a novel after thousands of online rave reviews from readers.With 50,000 sales a month, Wool reached No.1 on the Amazon science-fiction bestseller list as an e-book.20t
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