Restaurant.com usually offers $25 restaurant gift certificates $10.
But if you use the coupon code SPRING, you can save 60% off that already-discounted price.
$25 certificates come down to $4 and $10 certificates come down to just $1.60.
This offer ends today, but the certificates don't expire. Just make sure you read the fine print, as some participating restaurants require a minimum purchase, or only accept the certificates on specific days of the week.