Subject lines are things you put on the top of your email so that the
recipient knows what the email is about, when they see it in a list. They
are useful.
It's unfortunate then, that the last 10 threads on wikimedia-tech (as
sorted by my mail client) had no meaningful subject line.
May I suggest changing the subject when you reply to a mediawiki-cvs post,
to something somehow related to the feature or bug in question?
We manage to pick a meaningful commit message when we commit these
revisions, so surely there's no reason why we can't pick a meaningful
subject when we're talking about them.
-- Tim starling