1/2 price heyday explained:

On a special weekday of each month dishntunes.com will be offering 1/2 price gift certificates good at one of your favorite dishntunes.com establishments.

What you get: A Full Value Gift Certificate – ex: $25.00 to Joe’s Lobster Shanti
What you Pay: 1/2 the price – ex: $12.50
How long does it last: Your purchased Gift Certificate will expire at noon, 30 days from the day the contest begins.
Who gets the 1/2 price Gift Certificate: The fastest dnt fans to click “Buy Now”  while supplies last.
When: A designated day at either noon or 6pm.
Where do I play? on the dishntunes.com homepage
What not to do? Do not visit or call the participating restaurant to request the purchase of 1/2 price gift certificates.  This offer is only available on this website, dishntunes.com.
How do I pay? At the designated time click on the “Buy Now” located on dishntunes.com home page.  Major Credit Cards are accepted or you can pay through your PayPal account. You do not need a PayPal account to purchase this product. To use a credit card, after clicking “Buy Now,” click the “continue” link next to the Section that asks, “Don’t have a PayPal account?”