The Ad Peeps coupon module allows the Ad Peeps administrator
to create "coupon codes" to distribute to potential
advertisers, use in sales materials, ect. Once a valid
coupon code is entered, Ad Peeps will discount the order
based on a set percentage associated with the coupon code or
a dollar amount.
Coupon codes can be set to expire on a certain date and/or
can have a maximum number of uses. For example, you could
offer 10% off an ad package to the first 50 customers. After
the coupon code has been entered 50 times, it would expire.
Or you could set the coupon to expire on a certain date (ie
Christmas 2007).
This module is a single file that requires no additional
installation steps and once purchased, Ad Peeps will
automatically recognize and unlock these powerful features.
Read more at http://www.adpeeps.com/coupons.html