So you're basically giving out your address and more just to save a couple dollars on pizza? Smart.
For security concerns - No need to worry:
-- You can change the email on the account to yours
-- Change the password
-- If you plan on having the pizza delivered to your house, add your address and then remove it.
-- There will be no trace of you on that account.
-- If you're paranoid about delivery, just enter the address on checkout (doesn't get saved on the account, it's only used to find the nearest dominos), then go pick up the pizza yourself.
-- Get as many as 5 pizza's / day (dominos doesn't allow more than 5) for half the price.
Anyway, I've sold around 80 accounts so far on a couple more forums (PM me for links if needed), no one got in trouble for this and no one will, just like no one got in trouble back when starbucks was cracked and people were using cracked balance to buy coffee.
Anyway, I'm online for a few more hours, if anyone is interested.