spam in usenet groups; is there any setting in gnus to handle?

[Sivaram Neelakantan]

Some of the newsgroups that I follow seem to have been overrun with
spam.  Now, is there any settings in Gnus that can make those articles
get killfiled or disappear?  Is there a way to score it or make it
completely disappear from my Summary buffer?

I'd rather not set up the spam package
unless I have to.

sivaram
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