Once in a blue moon I ask cops for their badge numbers, too. I hate to sound like Al Gore, but my impression from reading news.groups is that there is no controlling legal authority issuing or enforcing this rule. I wrote buglady, but my message was returned to me as undeliverable. Some are cancelled by ISPs with limited newsgroup space, others just roll out of the queue quickly because of size. You are not going to reach many people this way.
Many people resent binaries in non-binary newsgroup .
All the other messages were hostile. So, if your binary file does survive for a while, it is going to irritate many of your friends in the newsgroup. Binaries cost some people money . Newsgroups circulate worldwide. Some people pay by the byte or by the minute to download newsgroups.