Fortunately, your efforts are doomed to fail.

Usenet convention defines spamming as excessive multiple posting, that
is, the repeated posting of a message (or substantially similar
messages). During the early 1990s there was substantial controversy
among Usenet system administrators (news admins) over the use of cancel
messages to control spam. A wikipedia.org/wiki/Cancel+message"
title="cancel message" class="new" target="+blank" cancel message is a
directive to news servers to delete a posting, causing it to be
inaccessible to those who might read it. Some regarded this as a bad
precedent, leaning towards censorship, while others considered it a
proper use of the available tools to control the growing spam problem.

A culture of neutrality towards content precluded defining spam on the
basis of advertisement or commercial solicitations. The word "spam" was
usually taken to mean excessive multiple posting (EMP), and other
neologisms were coined for other abuses - such as "velveeta" (from
the processed cheese product) for excessive cross-posting.
www.catb.org/~esr/jargon/html/V/velveeta.html"
title="http://www.catb.org/~esr/jargon/html/V/velveeta.html"
http://www.catb.org/~esr/jargon/html/V/velveeta.html A subset of spam
was deemed cancellable spam, for which it is considered justified to
issue third-party cancel messages. www.faqs.org/faqs/usenet/spam-faq/"
title="http://www.faqs.org/faqs/usenet/spam-faq/"
http://www.faqs.org/faqs/usenet/spam-faq/

In the late 1990s, spam became used as a means of vandalising
newsgroups, with malicious users committing acts of sporgery to make
targeted newsgroups all but unreadable without heavily filtering. A
prominent example occurred in alt.religion.scientology. Another known
example is the Meow Wars.

The prevalence of Usenet spam led to the development of the Breidbart
Index as an objective measure of a message's "spamminess". The use of
the BI and spam-detection software has led to Usenet being policed by
anti-spam volunteers, who purge newsgroups of spam by sending cancels
and filtering it out on the way into servers. This very active form of
policing has meant that Usenet is a far less attractive target to
spammers than it used to be, and most of the industrial-scale spammers
have now moved into e-mail spam instead.