[tim333]

Cryptocurrencies have proved popular for drug dealing, extortion and speculation/gambling. They will probably also help with tax evasion and money laundering. Those are applications of a sort if not very positive ones. The decentralization is necessary to put the above outside government control.

[malmsteen]

Yeah but you're not seriously saying that the killer app that everybody is waiting for in crypto is " being useful for criminals ". If so it will be banned everywhere soon like in China and blockchain is just dead.