X-No-Archive considered pointless
Because of who we are and what we do, a number of people who post to newsgroups like to hide themselves; use anonymous names, try to stop archives from retaining messages and so on. I, personally, am open with who I am and what I am but this doesn’t mean I decry the attempts of others to maintain anonymity. One such attempt is the use of X-No-Archive: headers in newsgroup postings.