Re: New article: Price as a factor of difficulty by
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14/06/2013, 18:06:44 UTC Re: New article: Price as a factor of difficulty by
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14/06/2013, 18:05:05 UTC Re: New article: Price as a factor of difficulty by
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14/06/2013, 17:58:55 UTC Re: New article: Price as a factor of difficulty by
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14/06/2013, 17:53:34 UTC