mooshWhat’s the difference between Local and All?
Lemmy is decentralized, you can think of it as being organized more like e-mail than Reddit is: people may have their account on different instances (for emails it’s gmail.com, hotmail.com, etc), and yet they can communicate with each other.
Lemmy communities, just like people, also each belong to a given instance; and yet can also be used by people of any instance.
With that: “local” will tell you what’s going on on the instance where your account is specifically, “all” will tell you what’s going on across all instances.
Someone on your instance needs to be following for it to get pulled into "all" on your instance. On a large instance that might be rather "all" encompassing, but it's an important distinction. On a fresh single-user instance "all" will contain zero posts.