"This will not be returned, unless of course you place it in another envelope and readdress it and place a stamp on it. Then the avalanche of mail will reach the P.M. This will be my chosen method of objection."
If it's coming as junk mail, a 60c stamp is a cheap (and peaceful) protest, imo. Might have to put an "X" through it so they can't be re-sent at a later date...lol
The problem is I don't think Gillard will admit to how many she gets back.
Maybe they are better sent to Abbott with a message to please pass it on to her - I imagine he would take much pleasure in lining up some trucks outside parliament and give them to Gillard with the media cameras rolling...lol
And I wonder what happens to people who don't get junk mail.