Shared under Share alike with credit via Shovel Guide
Two buttons, two very different meanings.
These look similar but do different things.
Join makes you a member. Members can vouch ▲ for stories and contribute to the universe. Exactly what you can do depends on your role.
Follow ★ subscribes you to the universe's updates and adds to its follower count, which helps it rise in Popular.
Follow a world you're curious about; join the ones you want to help build. (An owner can't join or leave their own universe; they're already all-in.)
