> Gee, this takes me back - about 2 years ago I used the free version
> of Eudora which at that time didn't have filters. The sun-managers
> list averaged (it seemed) about 250 messages a day, and the PHP
> list was nearly as busy. PHP used subject prefix, sun-managers
> didn't. I was fairly new on the sun-managers list, and I proposed
> adopting prefixes. I was immediately and roundly flamed from all
> parts of the globe. I've never again had such a vitriolic response
> to anything I've ever posted anywhere!
The PHP lists use prefixes because it makes it a whole lot easier to
handle multiple lists on the same topic. If you are subscribed to all the
PHP lists and don't feel like filtering all your PHP-related mail into
individual folders, but instead want to read all your PHP-related stuff in
one place but still want to be able to easily distinguish different types
of posts from each other.
There are mail clients that let you do some mungeing so you can achieve
this without the subject prefix, but they are few and far between.