Fediverse is Stand for Federated Universe,it's like the decentralized social media(mastodon,lemmy, pixelfed,etc) they are use activitypub protocol to connect each other so you can interact with mastodon(or other fediverse social media) user with your lemmy account,in fediverse you can create your own server(instance),While reddit, Twitter, Instagram is centralized social media Controlled by big tech/corporation.

Never.

Beast's lair is still strong and active today!!

Lemmy is not grown yet,so yeah i'm forced to use reddit.

Based