NNTP is a very old protocol used to distribute "articles" to users, much
like a mailing list. We now have an experimental NNTP bridge that
exposes sic.pm to NNTP: I am sending this with `slrn` which is an NNTP
client.

I set the tag with a `Tags:` header (Other fields are like-so parsed:
`URL: `, `Content-Warning: ` etc)

The bridge (sic.pm:563) allows read-only access for unauthenticated
users, and posts for the rest. You can login with your regular username
or email and password. The connection is using TLS so it should be as
safe as an https website. I plan on writing a more complete How-to soon!