Has there ever been a successful application of Liquid Democracy in recent (non-ancient) history?
While looking for the best application of a Democratic regime, people tend to look either at Athenian Democracy (as applied in Ancient Athens that is) or at Grassroots/Liquid Democracy (as supposedly promoted by (some?) Pirate Parties worldwide). Direct democracy applications are not viable for various reasons, mainly due to the vast number of voters and disinterest by the citizens (that's why most prefer to just vote for their representatives). Grassroots/Liquid is an interesting hybrid between direct and representative democracy. Have there ever been any successful applications of the model, and if not then why?