Prof Paul Wilkinson, of the Centre for the study of Terrorism and Political Violence at the University of St Andrews, said: “With hindsight I think the Norwegians need to step up monitoring of these transactions and of domestic extremist groups.

“I think there is a strong case that with closer monitoring there would have been a chance of finding out what Breivik was up to, taking him into questioning and preventing this terrible sequence of events.”
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David, quote is from the link you provided, and what concerns me is we now have people suggesting that Norway and it implied that e-bay and other companies also should more closely monitor their suspects and customers. We can take this fear thing too far in short order (Homeland Defense) and inch every closer to Orson Wells 1983 novel. You don't protect freedom by denying it.