Great idea! Decades ago, we would do this when selling lists of (voluntary) subscribers. We would seed the lists with our own secret monitoring names and addr

Great idea! Decades ago, we would do this when selling lists of (voluntary) subscribers. We would seed the lists with our own secret monitoring names and addresses in order to track the use and misuse of the lists. It's a shame that these simple things need to get reinvented constantly. Sometimes, people see differences when they should see similarities.