Communities are similar to subreddits, with the main difference that there are many servers (instances) instead of just over main website. I find it helpful to think of it as IRC servers on the larger networks: your user is associated with one instance, but you can access users and Communities associated with different ones more or less seamlessly.
Communities are similar to subreddits, with the main difference that there are many servers (instances) instead of just over main website. I find it helpful to think of it as IRC servers on the larger networks: your user is associated with one instance, but you can access users and Communities associated with different ones more or less seamlessly.