i'm not sure, but i visited this site https://following.space

so maybe it's just like a thing where you authorize a client to follow a list on your behalf?

not sure 🤔

use hashtags to search your favorite topics and build your tribe, those "packs" are an echo chamber of nostr influencers taking to each other and adding little value to your knowledge and interest base.

you can search in the Global Instance any keyword without the hashtags too, find your tribe or create one. You can join groups/communities as well.

good luck