[orbifold]

I don't get why people opt-in to tracking and behaviour analysis just so they can get a free taco, that seems counter intuitive. There is little choice, when you purchase things online, but that doesn't mean it is desirable. There are really old fashioned ways of maintaining customer loyality, offer a good product, hire attractive waiters and maybe offer a stamp bonus card. Spam mail from the local coffee shop surely does not increase customer satisfaction.

[cm2012]

It is innovative because it reduces effort for all parties while fulfilling the same function.