Presumably because this article presents Dwolla as something new and fantastic, when it's something that's available in most European countries in one form or another right now.

(and of course the experience from Europe is that while it competes with debit and credit cards, it kills neither)

Have you traveled much? In lots of other countries, few stores take credit. Examples I've been to: Austria, Germany, Portugal, New Zealand… strangely enough the hot "latin" countries of Europe love credit cards, so it's easy peasy in Italy or Portugal. Also Finland, thankfully, because the amount of money you'd have to carry there'd be ridiculous.

So can my debit card because it says VISA on it.