For those not aware, the Forbes author of this article wrote a book on the history of cypherpunks (including the mailing list) which Dread Pirate Roberts was most likely a part of, or the very least inspired by it's members in some way: http://www.amazon.com/This-Machine-Kills-Secrets-WikiLeakers...
Having interviewed Timothy May, Cryptome founder and Phil Zimmermann is probably how he earned enough reputation to have this interview set up.