In a previous article, John Fereira said:
receive. On the other hand, I think that very few spammers actually read
the forums they are spamming and in many cases are just regurgitating
content provided to them using some sort of spam bot.

When you see the same untargetted ad in every newsgroup you read (and
cancel notifications in the abuse groups), then you know the spammer isn't
reading any of the groups they spam. The ONLY time when it's possibly
worth replying in the group is when the spam is targetted to the group,
and even then it's of doubtful usefulness in making other potential
spammers think twice - because in order to think twice, they'd first have
to think once, and spammers don't.


--
Paul Tomblin http://xcski.com/blogs/pt/
Progress (n.): The process through which Usenet has evolved from
smart people in front of dumb terminals to dumb people in front
of smart terminals. --