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 "text": "eBay's user rating system, despite being its biggest competitive advantage, is clearly flawed, and the persistence of those flaws demonstrates the unmet need for a decentralized reputation verification system, since no better technology has yet been produced.",
 "author": {
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  "name": "Wulf A. Kaal",
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 "abstract": "While the user ratings eBay uses clearly have flaws (that illustrate the need for a decentralized reputation verification system – discussed in Chapter 6), so far, nobody has been able to come up with a better technology.",
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