

You could programmatically rearrange the meaning of sentences. Ie instead of “where is the library I need to get a book” you could do some sort of full word replacement cypher and end up with sentences like “Lets mambo down to the banana patch.”
Just for fun. :-)
For the federating its a new kind of AP actor. I’ll be putting in a FEP for it in the near future, but its basically a “Group” that only cares about the “Following” collection.
You can see example json for the AP interactions here: https://codeberg.org/rimu/pyfedi/src/branch/main/docs/activitypub_examples/feeds
The AP interactions for a Feed are: