Aside from the thought police comment which could be considered derogatory to your good selves this question from stebbo is a legitimate one.
The forum members who contribute freely what must be considered the drawcard to this site have an interest in threads they are generating. That's what makes them worth reading. I know I've come back after 24 hours eager to see how something has developed and been quite annoyed to find all trace of it gone.
I have no argument with your right to remove posts or threads to protect your legal position or the integrity of the site but for the sake of us poor saps who have an interest in what's going on I would ask you to do it with some sensitivity. I've known a few interesting threads removed in their entirity because someone got out of hand towards the end.
Personally I would find an a post from the moderator with a few explanatory words along the lines of - several posts removed because of xxxx - much more satisfying. Or maybe a post saying - xxxxx given a yellow card for insulting language - would be entertaining as well as informative.
Probably people who breeze in would find it entertaining too if you show a little creativity instead of merely brandishing the rule book.

Now standing in the hall with an excersise book down the back of my pants waiting for my turn in the naughty room.

KV