You receive a penalty notice in the mail and have to pay a fine. Similar to a traffic infringement or parking fine.
All elections are held on a weekend and voting booths are everywhere, to make it a little easier for everyone to vote.
You can choose to not mark the ballot, no one would know. As long as you turn up to a booth and get your name marked off, then you are considered to have voted.
As a result, voter turnout is generally over 90%.
I don’t disagree.
There is one forum I still participate in:
https://forums.whirlpool.net.au/forum/
It’s mostly tech-focussed and Australia-centric, but it does have other topics like sport, TV etc…
I wish there were more like this.
I hate that the bulk of online discussion is now owned/monopolised by a couple of huge corporations.