Silk Road: How FBI closed in on suspect Ross Ulbricht
Found on BBC News on Wednesday, 02 October 2013
In the months leading up to Mr Ulbricht's arrest, investigators undertook a painstaking process of piecing together the suspect's digital footprint, going back years into his history of communicating with others online.
With a Gmail address to hand, Agent-1 linked this address to accounts on the Google+ social network and YouTube video site. There he discovered some of Mr Ulbricht's interests.
Lesson learned: don't use GMail and cover your tracks. That aside, if there would be a sane drug regulation most of the illegal markets would not even exist.