A good one for rules manager Skinner.
To assist, the article cannot be used again if it was marked by a referee.
At the beginning of each match thread:
Only original essays, not used in previous games, will be marked by referees.
That would include trials.
We actually had a situation in 2003 when a lot of articles were deleted on other forums. It was decided then that people could post pre-used articles but that was for 2003 only. Since then it has been well accepted that any article that has been marked by a ref cannot be used again.