I am not one for doing lists and questionaires myself, or contracts...but I would think one may want to know what happened to his last submissive or partner before and if he minded if you contacted them.

Whatever you do, if and when you decide to go and play with the individual: I would highly advise having a real life third party who knows exactly where you are at during your dates with the prospective dom available to call the cops etc if you dont check in etc.