http://www.bloomberg.com/news/2013-09-12/who-killed-online-privacy-we-did-.htmlExcerpt that refers Bitcoin:
"Worse News
The news wasn’t good.
For a site whose glory has long been the image of the courageous freedom fighter in, say, Syria bravely sending messages to the world, the results were depressing: “Of the top twenty most popular Tor addresses, eleven are command and control centres for botnets, including all of the top five. Of the rest, five carry adult content, one is for Bitcoin mining and one is the Silk Road marketplace. Two could not be classified.” It gets even worse: “The FreedomHosting address is only the 27th most popular address,” according to Technology Review.
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