[kevinrm]

This would apply to both XC4 and XC5 versions. If you have regular customers, some of them will figure out that they can get a discount if they abandon the cart and wait a day or two for the abandoned cart email to come in. These folks compromise the whole system really. I've got probably a dozen of them (using XC5 now) that do that so I've turned the thing off for awhile.

My suggestion, in case the developer is reading this, is to add either a switch or box which will limit the number of uses for any particular customer. This would make a huge difference really...