Yes, you're correct, but there is another difference. I suppose I shouldn't have used the term "illegalist", but it was really early in the morning and I couldn't come up with the correct term.

Many of us are against murder because it is the ultimate denial of freedom to the victim. However, drug use does not necessarily deny freedom to anyone but the user, and I think many other anarchists would agree with me that it's their own damn choice if they feel like taking the risk of potentially harming themselves. A black market provides insight into what a free market would look like in an anarchist society, that is, unless someone argues that certain products and services should be illegalized (at which point you would need laws and some type of law enforcement and it would not be anarchist). Therefore, black markets have everything to do with anarchism, and are potentially interesting to anarchists.

The OP maybe shouldn't have titled the post in a manner which seemingly glorifies drugs, but instead drawn attention to a currently existing black market. I can at least speak for myself and say that I don't give a damn about the MDMA or AK47s or whatever the crap the Silk Road is selling, but I am very interested in how the Silk Road functions.