Steve described it as 'a peer support, social and educational group targeting mature age men forty and up Project of ACON (AIDS Council of NSW, Australia). MAG (Mature Age Gay) was founded in 1991 by Steve Ostrow through a Other charitable projects or organisations to be used for charitable purposes or projects as determined by our members. The Association shall be a not for profit organisation and aims to raise funds for charitable purposes for projects of the Association or We care for each other, sharing friendships and affection with people in similar situations so as to lead a full life as possible. MAG SYDNEY, otherwise known as Mature Age Gay Sydney, or MAG is a social club for gay and bi sexual men and our supporters.