Killfiling messages crossposted to the cardiology newsgroup?

Chung, and the others in the cardiology newsgroup, seem to be
arguing with each other enough to stay too busy to crosspost
much to the asd newsgroup, so I haven't been able to do an
adequate test of my method of killfiling such messages in
Windows Mail under Vista yet.

There were, however enough crossposts to find out that my
method doesn't work on messages you have already downloaded
to asd before applying the method, and doesn't work on all
the crossposted messages that arrive afterwards.

At least this lull in the crossposting benefits those who don't use
the Windows Mail program.