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The take-down of Liberty Reserve, which authorities described as a multibillion-dollar online money-laundering operation, raises the question whether Bitcoin could evolve into an alternative for cybercriminals.
Attack piece from 2 directions, don't read if you suffer from high blood pressure.
TL;DR: Bitcoin is undoubtedly a nefarious evil vehicle. But only for petty small-time crooks. Conservative, savvy, large criminal enterprises won't touch it, because it has too many flaws as a currency: too volatile, un-scaleable, and not anonymous enough.
http://www.cio.com/article/734182/Online_Money_Laundering_Bust_Casts_Light_on_Bitcoin