The excerpt I reading from comes from this excellent blog: http://chycho.blogspot.ca/2013/11/the-bitcoin-bubble-or-is-it-two-charts.html
The guests featured are: Bitcoin Trader Buttons, ZeroFriendsRecordings and David Pryke.
I had minor problems compressing this and uploading it. In the event it doesn't sound right, do tell me.
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