There are two forms of list usage: one-time use and unlimited usage for one year. With one time use you are allowed use of the list one time (this is mostly applied to orders for labels) for an additional cost a list may be rented for multiple uses for one year. All compiled lists are seeded with decoy names that will track the usage of the list. If you purchase a list for one-time use and would like to reuse the list, you may do so for “reuse” charge if approved by the list owner.