http://en.wikipedia.org/wiki/Silk_Road_%28marketplace%29
son informed me about this one
A friend told me of that last year and I was stunned that you could order any grade of cocaine you wanted, or any drug for that matter, and they posted it to you. You couldn't pay with a card though, you had to buy some internet money, token type thingmabobs -- I forget exactly what -- and a friend of his was a regular customer for skunk weed so it did/does work.