You can only contact members. All profiles of non-members, whether living or not, have profile managers that can be contacted for things like trusted list requests or are what we call "orphaned" profiles (ones that do not have a manager). In those cases, any member can "adopt" the profile, becoming its manager, and then controls its trusted list. When a member dies, profiles of living persons that he/she managed are deleted unless a living member has been designated to manage the profile.