I can understand, but i looks like that there all using the same kind of system...
As far as I know Bitcoin started evolving after the huge success of Silk Road (https://en.wikipedia.org/wiki/Silk_Road_(marketplace)).Be extremely careful if you set a black market. The first clients can be secret service agents. They can come with hundreds of BTC and become your friends. Few month later you can be in a prison
.Yep that's exactly what they are doing. People have no business in a dark marketplace anyways I mean why would you need one if you have one or visit one then it always means you have something to hide cause there are no other benefits and this means that theres lots of criminals to be found on the dark marketplaces.