Today, Twitter co-creator Jack Dorsey announced the Next New Greatest Thing: the ability to pay for things using your iPhone.

Well, that’s not so new. That’s been going on in Finland (home to Nokia) for quite some time now.

But, unlike those earlier attempts, this Next New Greatest Thing actually has an add-on to the iPhone to make payments. It’s really a shame (Bluetooth) that there wasn’t something (wi-fi) that came with the phone (3G) that could communicate with a vending machine (SMS) without an add-on.