Most of the info that pizza places and airlines use is given freely to facilitate the transaction.  While Americans talk about Data privacy, most will give out amazing amounts of info for a free I-Pod.

If you really worry about Data Privacy, stop giving out info that isn't required for transactions, like the idiots at Best Buy that want your Zip or Phone #.  Of course you have to start using cash, since your Credit card is the easiest way to track you, but no on wants to use cash, its' too hard.

I worry more about the ACLU than Pizza Hut.