At least someone intelligent is asking if "parallel construction" was used: <a href="http://blog.erratasec.com/2013/10/silk-road-caught-by-nsa.html" rel="nofollow">http://blog.erratasec.com/2013/10/silk-road-caught-by-nsa.ht...</a>
Best description found so far: <a href="http://www.bbc.co.uk/news/technology-24371894" rel="nofollow">http://www.bbc.co.uk/news/technology-24371894</a>