If you query the lemmy API, you get a ton of fun JSON data:

• https://lemmy.ml/api/v3/site

One thing interesting that I saw was huge lists of other federated servers in the federated_instances dictionary.

There’s three arrays in there:

1. linked
2. allowed
3. blocked

What do each of these mean, and what impact does it have on the server when they’re set to some list of hosts or if they’re null?