Truthfully I’m shocked it took this long, especially with BitCoin being around for a long while now. But, then again, BitCoin (BTC) is finally being considered a legitimate form of currency, so hey.
While I have no intention of using DarkMarket, it makes me think of DarkNet, which is essentially another Internet that is only accessible via Tor. This might be worth keeping an eye out, though. Even if this doesn’t take off, the code is open sourced which can make it pretty viable in the future.