Aileron 69, I'm sure you've made a few 'airmanship' mistakes in your career. I don't think parking your aircraft nose to nose with the parked aircraft, leaving a childish, sarcastic note, or posting photos of your parking on facebook was the right thing to do.
A simple phone call would have solved all issues
I sure have, but I always make sure I ask to use someones tiedowns before parking there. Its usually pretty obvious that an aircraft will be returning if they have left ropes behind. Maybe if said Broome pilot had turned Broome pilot's brain on no phonecalls would be needed?