Emphases of the religion include altruism, community service, nature worship, spiritual healing and physical exercise. Members meet in congregations like those of churches. John A. Saliba states that, unlike many other New Age or UFO religions, the Aetherius Society is for the most part considered uncontroversial, although its esoteric and millenarian aspects are sometimes ridiculed. The religion may be considered to have a relatively conventional praxis, attracting members from mainstream society. The society's membership, although international, is relatively small. David V. Barrett suggested in 2011 that the worldwide membership was in the thousands, with the largest numbers in the United Kingdom, United States (particularly Southern California) and New Zealand.