I learned it as a young boy, from my parents.Not sure that will change anytime soon. Unfortunately any online forum will attract the nuffy brigade in amongst those who just apply a bit of balance. Every club has them - Geelong is no different.
Some of the personal remarks made against players do go a bit far - this board is no different. If a few posters met a few of the players concerned, they'd no doubt change their perceptions pretty quickly.
I learned my lesson many years ago at a Geelong game. Being a bit young (and stupid) I spent most of the first half directing some feedback at a certain Geelong player. At half time a pleasant middle aged woman turned and walked towards me to kindly ask that I be a bit more respectful ....... it was the players mum. Never did it again.