As of July first 2015 the Dutch have a new democratic instrument: the advisory referendum. Should people disagree with a passed law or treaty, they can try collect enough signatures to call for a national vote. The outcome or the vote is advisory, so not binding. The outcome needs to be ‘taken into consideration’ by parliament.
This is the second advisory referendum ever held in the Netherlands. The first was in 2005 and offered a vote on the new consitution for Europe.
Who is the ‘referendum platform’