>>It's "pay once for unlimited", not "unlimited free". You paid, ergo it's not free, no matter how they called it in the commercial.
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>Like with mobile phone subscriptions; you pay a bloody big tarrif, then they tell you that includes so many free minutes and/or texts per month. No wonder people are forever yacking on them - to use up their "free" airtime. I'd much rather they charged a cheap subscription then you just pay per call, as with the landline.

One of our daughters has traveled home a lot over the last few years, and has noticed that the cell phone service in the US lacks a bunch of features that they have in Europe, even in Serbia. For one, paying your parking by phone. You just call a number displayed at the entrance, and then type your license plate number, and you get one hour - which you later pay with your phone bill.

Here, it seems that inventive billing is the main feature.