SYDNEY MORNING HERALD - Sep 11 - According to eHarmony, the average Australian online dater has never been married, is in their early-to-mid thirties and works as a teacher. The second and third most popular professions are nursing and retail for females, truck-driving or in a trade for males. The numbers and professions on RSVP paint a slightly different picture. The most popular profession is healthcare followed by education, science and then trades and services. The most popular age group is 25 to 34-year-olds, followed by 35 to 44.