[onion2k]

That's amusing, but at the same time it could make an excellent business idea - restaurants could tailor their menu based on the preferences of people who're booked to eat there. If you knew that a group of people who all really like sea bass are arriving at 6pm a restaurant could put a high-profit sea bass special on the menu knowing that those people are likely to order it. The customers are happier because they get their preferred dishes and the restaurant is happy because it makes them more money.

[thatwebdude]

They could also change the pricing. Because they know you'll be more interested to try an expensive steak ($3 more than your neighbor pays).

You'll also find that same steak tastes better now.

[akerro]

Please. no.