I don't quite understand how Melba could receive an anonymous PM.
If you want a world free of "censorship and gagging" you could try one of the former soviet countries, though you'd still have to please the people in charge there.
Australia has censorship rules. Forums have rules which require moderators to implement. This one expects people to be civil and avoid abuse. Sarcasm is almost always rude / abusive / mocking. That's the whole point of it.
So as far as I can see, Melba has a set of double standards and a curious use of English language ie when Melba does it - its all good and when we or the moderators point out or implement the forum rules - it's "censorship and gagging". Well I for one am quite happy to have the forum rules that encourage forum members to be polite enforced. Just because your insults might not include overtly obscene language, doesn't make them any less aggressive and unpleasant to read.
And on any forum I've ever been a moderator on - you'd have your membership cancelled for arguing with a moderators decision. Asking for an explanation is one thing, disputing it - would get you chucked out. So consider yourself lucky I'm not moderating. Moderators have enough difficult decisions to make without people like you giving them a hard time.