Yes. Any instances that are linked with your current instance basically become one—all communities, posts, and comments become intertwined into one big social network and you can interact freely. Behawshould be included so you probably haven’t come across a community hosted there yet. You can always see what instances are linked by going to the homepage of any Lemmy instance, scrolling to the bottom and clicking Instances
They were a donation platform for community projects and open-source projects. Their main thing was that all donations and expenses by an entity are public, so there’s a lot of transparency with who and where the money goes that you donate. Really sad to lose them
If you block an instance through the Lemmy UI directly, it only blocks all content posted to those instances. If a user from the blocked instance comments or posts in a community on a different instance, it’ll still show up for you
Based on your recent activity, you might be interested in: !introvert@lemmy.world