"Damon Hill" wrote in message
...

Another kook filter is to restrict messages cross-posted to more than
three newsgroups. Many such folk seem compelled to spew their dreck
as widely as possible, and most replies don't trim out irrelevant
groups, so I get to miss a lot of nonsense.

Most trolls go for five groups - the maximum most ISPs allow. Setting KF's
at three groups does remove most trolling.