The different Twitter-exodus social-media platforms as if they were neighborhoods, so far:

Mastodon/the Fediverse: the neighborhood around a university with a ton of cool houses full of cool people, but half of them are out of milk or toilet paper or both

Post: giant gleaming planned community with nothing walkable and a dubious HOA

Hive: initially-kickass converted warehouse that turns out to have two toilets and one exit and no fire suppression