As we discussed in our last project I would like to add the following modification to cart keeper's coupon module which you modified last time (to allow for coupons that can be used once per user only)
The now modification would add the following options to the module.
Coupon Valid For: ()All Products or
()Some Products [text field with list of product ids that the coupon is valid for]
And can you also add a checkbox that if checked will make the coupon for logged in users only and would display a message "You must be logged in to use this coupon" if the user uses the coupon without logging in.