I saw this big notice in today's paper about this class action lawsuit involving multiple airlines that serve Australia. It seems it has to do with alleged price fixing. Some of the airlines have agreed to settle while some have not.
In most of these cases, the lawyers get a good chunk of the money with the rest divided amongst the claimants. Might be a few dollars so could be worth signing up if you agree with the case.
Looks like Virgin Australia is excluded?