Some communities are choosing to go to world kinda recently.
Personally kinda a nothing burger to me but its strange to move when the community which is solidified on one instance. Its fine to have multiple communities in multiple places...
World is the most vanilla of the servers in my experience.
It’s not that .world is bad per-se, it’s just that the idea behind lemmy is to spread things out across multiple federated instances, and everyone is essentially piling up there
I never liked .world due to how toxic their discord admins acted towards my suggestion of a matrix Server, only to then make a matrix Server a few weeks later.
In most Lemmy clients, the ! makes it a link, e.g. !196@lemmy.world. You can also do something similar with users, e.g. @aeiou_ckr@lemmy.world. Note that these links stay on your native instance (e.g. if I linked to !196@lemmy.blahaj.zone it'd still open in lemmy.world for you), but Voyager's autocomplete makes a normal link (e.g. !196@lemmy.blahaj.zone) that is not instance-independent.