He did nothing wrong, he never handled drugs directly, he just acted as a medium for the crime to happen,
That IS wrong.... it's like saying you never killed anyone, you just hired a murder to kill that person. You did nothing wrong.
Also, just because some criminals aren't caught, doesn't mean that no criminals should be caught. That's a logical fallcy.
He did nothing wrong, he made a website and allowed people to buy and sell items, it just turned out that most of these things were illegal, do you think that if he took silk road down that would put a dent in drug trafficking? there are tens of sites out there like silk road, if the real law breakers weren't on silkroad, they would be somewhere else, doing the same thing