i think threads close for 2 main reasons
the site does not understand what slander is and means, especially for them
i can name someone, on the internet, in a forum, and say whatever i like, and the site IS NOT liable, nor is the site even required to remove the post when requested.
(re: whirlpool law suit)
and secondly, a lack of understanding of commonly accepted internet rules:
"All readers and Members are advised that the opinions expressed on or in this Forum are the opinions of the posters and do not represent the opinions of the Forum, its staff or it's owners.
You are advised that everyone on the "internet" is an "expert"
and as such you are advised to take all opinions in here with a grain of salt.
In Forum speak, some people are full of sh|t and if you take their advice, you are playing with your life. (or your snakes life)
If you want to become a better [whatever forum is about], might we suggest that you seek professional advice/training, not rely on a faceless person on the internet.
This message endorsed by a faceless person on the internet."
is about what 99.9% of forums i use as "rules"