Participatory democracy has been in Switzerland since the later Middle Ages. Two cantons Glarus and Appenzell Innerrhoden continue to use the Landsgemeinde. Citizens come together in the town square to vote on issues by putting put up their hands. Other cantons abandoned it because federal law made it impractical.
Positive lessons learned from Switzerland include the people being able to vote to increase taxes when needed. A negative result occurred when the people banned minarets on mosques with a slight majority. This was arguably against international law and human rights. However, it would not have happened under the Australian Constitution with its freedom of religion clause, Switzerland has a relatively weak Constitution. This is one of the reasons PD recommends making our Constitution even stronger.
The world’s first direct democracy internet party was Demoex in Sweden, it had a seat in local government from 2002 - 2013. It lost it’s seat when it focussed on trying to win a federal seat.