These are great questions. I have the same about communities: if I create “Funny” on this Lemmy.world, does that prevent someone from creating a “Funny” community on another Lemmy server? If it does not, will there be millions of “Funny” communities?
I asked this yesterday and the answer is that yes, there will eventually be the same communities onany servers and you would have to seek each one out and join it.
Yikes. How would any community get any real consolidation or aggregation? I don’t want to have to know where to find the popular community of “Funny” lives ya know?
My understanding on this is yes there will be multiples in some cases. But you could subscribe to all of them.
(I personally don't think there will ever be a million funny's as it a pretty broad title.)
If you want this community you should make it! I'll join!
One case I see this being a good thing could be regional stuff.
Like say a community based on a local eSports league, you wouldn't have to worry about all the other leagues taking the good names. You just name it eSports and people from your city join your eSports community if they wish.
It really is small(ish) community focused, instead of Reddit's massive communities.
I understand that those may be beneficial, but I struggle to see any “aggregation” happening when every server can have every duplicate of every community. Think of how much disinformation will exist from bots creating duplicate communities from large lemmy servers on small lemmy servers then posting what’s NOT the community creators desired content. It’s difficult enough to moderate a community without having to explain that lemmy.world’s “funny” community is different and doesn’t contain the same content as “funny” on a different server. This is not aggregation.
Your user "exists" on the instance you registered on. Think of it as creating a user on gmail, and a user on yahoo mail. Two separate users tied to each mail service. If yahoo mail were to shut down, all your messages in yahoo mail would be gone. Any messages you sent to gmail would still exist in gmail though. So, any posts or comments you had made outside your instance (on other instances) would still exist. You just wouldn't be able to log in as that user anymore.
If the account user name you want is taken on lemmy.ml, you can sign up on lemmy.world or beehaw.org or some other instance, then browse from there. Keep in mind, that even if your "account profile" name is taken, you can still set your display name in settings to what you wanted.
I feel like it makes it easier for someone to mimic/impersonate another user. How do you know if that user is the actual user? I know you can open their profile but it'd be inconvenient especially in an active conversation.
This could lead to misunderstanding and even security risks.
You know what? You are absolutely right! Nothing is stopping someone from using the exact same display name, and posting a response as if they were the original poster. Hmm... 🤔
Similar, but different question, all these Lemmys different? For example is there one primary Lemmy or all they all different with possibility duplicate communities?
If a server shuts down suddenly, all access to the accounts on that server is lost. The caches of user profiles, posts and comments on federated instances may remain.