I use Outlook Express (version 6) and found a way to do a
pretty good job of filtering most of the off topic posts in this
newsgroup.

This assumes that you are not interested in any posts cross-
posted to a certain outside newsgroup.

Add the newsgoup "alt.religion.jehovahs-witn". Leave it
unchecked in the synchronization settings. Now add a rule
to delete all postings to that group when they are downloaded.

From the menus, click Tools - Message Rules - News...
From the dialog, click on New.
From the next dialog, click on:
section 1 - "Where message is on specific newgroup"
section 2 - "Delete"
section 3 - "specified"
(then the newsgroup and "Ok" in the next dialog
section 4 - type in a name for the rule.

Click "Ok" in each dialog.

Now when a message arrives with the specified newsgroup
as part of the cross postings, it gets deleted.

There are two downsides.

One is that you have this extra newsgroup, but it empties
itself when you click on it but before you read it. Dealing
with an empty newsgroup is easier than wading through all
the cross-posted articles.

The second is that messages arriving after you do the
synchronization but before you read rec.ponds get past
the filter. This is somewhat rare.

Even with those downsides, it sure helps a lot in filtering
down to just the topics related to ponds.

Hope this helps.

Jerry