Posting a followup simply perpetuates the thread and wastes additional net resources. MMF articles are now generally cancelled on sight by the regulars in the news.admin.net-abuse hierarchy, so they rarely survive in the news stream for long these days. 3.5 Do not create a huge irrelevant thread on ABOI to annoy others. Post a follow-up to the original group or mail the person who posted the article. Irrelevant threads, called cascades, are usually one-line posts that continue a rhyme or a theme.
Most people resent having to deal with cascades.
Those who DO like cascades can go to alt.cascade and alt.humor . A crosspost is an article with more than one group in the Newsgroups line in the header. Unless followups have been set, replies to crosspostings will appear in every group in which the original article appeared. If someone follows up with a reply to a message crossposted to ABOI, the reply will appear in ABOI, thus creating a thread. Please work out how to use your mailer and news posting software to remove the extraneous newsgroups from the message header.