[KevinM]

Here are two more mini-hacks which some may find useful. Thanks to BustaCap for testing the threading-by-subject script and to trackpads for testing the killfile filter.

Threading by Subject Title
The threading by subject script works on email lists only, whereby sometimes there are no message references included in the headers, so the only way to match the thread is by the subject title. Now with bugs removed

Killfile Filter to block posts
The killfile is similar to the equivilent you would find on a newsreader. It allows the admin to block certain messages from downloading if certain words or phrases are met by checking the posters name, subject title, email address or server where they originated. It is a fairly lightweight filter suitable for blocking annoying trolls and needs to used carefully to avoid blocking legitimate posts. Some may find this against the principles of usenet, but it's here if you want it.

You can use either or both of these together and are compatible with the stripping of email footers.