The one regarding "Where are the Aussies" is typical of a number of shite troll threads popping up on the forum.

Any chance of something like a Troll poll button eg:

This thread has been tagged for trolling. Do you agree? (with yes and no option buttons).

If the poll gets say 50 respondents with a 2/3 majority yes, the thread is red carded or sent to a special Troll Posts forum.