Hi Collin,
Which version of the Cart and DNN are you currently running?
Currently the CreatedByUser field is not used when adding a product so it will not log the user who created the Product. I will add your request to our Dev Roadmap to be added in a future release and will also move this post to our Enhancement Requests forum.
If you would like to prioritize this feature into programming please submit a Quote Request at the following link:
http://www.smith-consulting.com/servi...
We quote all feature enhancements below cost since it is enhancing the module and in most cases we can start work within a week.
Thanks