> I have seen a lot of arguments in this thread against Slack or whatever.
>
> As a counterpoint I haven't seen mentioned:
>
> 1. The accessibility benefits that come with Discourse and chat systems
> like xmpp. instead of IRC/email.
>
> 2. The newcomers that may encourage to be involved to the development of
> scheme. If these are wanted of course.

Because those arguments are made repeatedly all over the internet, and
because this thread was about how to keep the existing mailing list
tradition going (albeit that it has now sidetracked a bit).

Anyway, IMHO scheme.org should be open to any FOSS tech that does not
put the domain at risk. Establishing discourse.scheme.org and/or
xmpp.scheme.org is fine by me as long as I don't have to maintain them.
Same goes for sourcehut, gitlab, gopher, etc.

What should probably be out of bounds:

1) Commercial software (for which scheme.com would be more appropriate)

2) Social media (Mastodon, etc.)

Commercial is too divisive across the Scheme community. Social media
focuses on "let me tell you who I am" flavored communications; those are
a magnet for unproductive conflict.