Boxgroove is a marketing service focused on the golf industry. It provides a click-thru service. The click-thru passes a query string value. This module embeds that value in Boxgroove tracking javascript, along with the order value, on the order confirmation page. When a cart is created for the user, the query string value is stored in the db. Should the user eventually check out, that value is retrieved. More information and a download link can be found on the project page.