The point of parallel construction is that we don't know that it's at work.
Obviously, the disappearance of such a site leaves a gaping hole on the Web:
Silk Road has proven that the demand/market is there, that people are willing to use the Web to acquire those goods, that they are willing to pay, that the whole transaction works and that this leads to a massive amount of cash.
So, make no mistake, the next Silk Road creator is certainly out there, probably technically more astute and careful, and already building.
http://www.reddit.com/r/IAmA/comments/1fwi48/im_the_ceo_of_a...
> A: The road has more users, but our service is better (to put it bluntly).
> [...] We have automated PGP encryption of messages for the members who refuse to send their messages using PGP.
Ouch.
Black Market Reloaded is the odds-on favorite to be the new Silk Road.
Drugs are bad, mm'kay?
And almost as certainly: more experienced in the use of serious violence. The next guy won't be hiring hitters without introductions from fellow violent criminals. (Not that undercover cops have never been vouched for in such a manner, but it raises the stakes significantly.) Yay Drug War!
Yes, they are legally obligated to not lie about the true means of how they came to have the evidence. But if nobody can prove you're lying, they can't call you on it.