[mmcdermott]

> Require human moderation. That naturally limits scale.

Does it? Does a human need to examine everything posted? You can certainly send letters without them going through a human moderator. Only what is flagged by a scanner? What if nothing is flagged? What should be flagged?

[rad_gruchalski]

> Does it? Does a human need to examine everything posted? You can certainly send letters without them going through a human moderator.

Because those are two orthogonal things. You aren’t sending a letter to be displayed by everyone and their dog on this planet to see.

[mmcdermott]

You can also print flyers, pamphlets, books, posters, and all such things without submitting them to a human censor (c.f. https://internetshakespeare.uvic.ca/Library/SLT/literature/p... for this usage).