So, I updated, clarified, and relatively unified/standardized the language.
Basic idea is if one is subscribed to BALUG-Talk and/or BALUG-Admin, but not BALUG-Announce, one gets subscribed to BALUG-announce ... but there's also an exception process if one really doesn't want that.
Various pros/cons compared to, e.g. "umbrella list" - went over that many moons ago, and opted to *not* do "umbrella list" - and I still think that's generally better (more flexible, etc., but adds wee bit 'o code/work to (semi-)automate the handling without doing "umbrella list".
Anyway, many moons ago, I semi-automated it. The only part that is likely to remain manual, is if anyone requests to be added to (or removed from) exception - fairly simple, their email address(es) get added to (or removed from) a file. The other bits thus far have been semi-manual/semi-automated (I probably should've further automated it long ago ... but not it's getting much closer to being fully automated - except for folks requesting change of their exception status).
Basic idea also, with the automation, will probably code it up to check daily, but also include a bit 'o hysteresis - so we don't catch user just as they're manually subscribing, and "race" and beat 'em to adding 'em to BALUG-Announce (that would be kind'a impolite and confusing). So, I was thinkin', code would check, upon finding candidates to add, note that ... and once so noted information is >~=48 hours old, upon subsequent checks, with situation otherwise being still the same, *then*, they'd get automagically added.
Oh, also updated those relevant URLs from lists.balug.org to temp.balug.org. So, locations of updated text and web pages, etc. There are the list info pages, directly under (one link level beyond): https://temp.balug.org/cgi-bin/mailman/listinfo
There's old link location, and newer, all same content: http://www.balug.org/lists/balug-announce-do-not-auto-add.html https://temp.balug.org/lists/balug-announce-do-not-auto-add.html and will be in future: https://lists.balug.org/lists/balug-announce-do-not-auto-add.html I'm thinking eventually canonicalize upon the one above ... but we're not there yet (and then also then have: https://www.balug.org/lists/balug-announce-do-not-auto-add.html redirect to that same canonical - also future ).