From what I’ve heard they haven’t been all that successful really. But before Silk Road went down a number of people buying the drugs from them had ended up arrested due to the exact dynamic I described. Having to have shit delivered to you creates an unavoidable chance to identify and find you. After that? Silk Road didn’t turn out to be nearly as impenetrable or anonymous as claimed.
Even if Amazon were selling/recommending bomb making components (which is the subject of this panic). I don’t think anyone would have to be concerned about anyone ordering secret untraceable bomb making components on Amazon.
While this started in the UK, the thrust of the article is how the UK press spurred off a press panic on the subject. Its been all over the US news for a couple of days.