Today, many mystic societies operate under a business structure; membership is basically open to anyone who pays dues to have a place on a parade float. In contrast, the traditional mystic societies were social clubs with secret membership lists. Divulging one's membership in a society can be grounds for dismissal. Some of the newer mystic societies actively recruit prospective members. Some of the older societies have restricted membership, with waiting lists numbering in the hundreds; others restrict members to alumni of particular schools, or other conventions.