Facebook pages such as Eats on Feets and Human Milk 4 Human Babies are international communities with state-based Australian pages that give advice and guidance to parents engaging in breastmilk sharing.
They also provide a forum for meeting and sharing milk.
The Australian versions of the pages have more than 16,000 followers between them.
RMIT School of Health and Biomedical Sciences lactation consultant and lecturer Jennifer James said the health benefits of breastmilk over formula were part of the reason women were seeking donations.
