Moderation
When you start deleting messages from some posters and not from others, you enter a very slippery slope.
When some posts get deleted, and then references to these posts in turn get deleted, sometimes with and sometimes without a comment about what was removed and why, it tends to skew the discussion, whether intentional or not.
When a post of my own gets deleted, with an explanation that I find unsatisfactory, I have to wonder whether it's time to leave these Forums again.
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