The Ars Technica article at http://arstechnica.com/tech-policy/2014/11/silk-road-2-0-inf... has the quote:

> "The server was controlled and maintained during the relevant time by an individual using the email account 'blake@benthall.net,'"

Since he used his personal e-mail for hosting, I would assume he used his personal credit card too.

That might be right, but there are tens of thousands of people who use their personal email and credit card to buy hosting services. You can't assume they all operate Silk Road 2.x