Just a little rant. When I first visited Lemmy Sites a couple of months ago it felt empty. Besides the really mainstream community pretty much everything else just felt empty.
Meanwhile though traffic has increased a lot and I feel well entertained by the traffic in c/hfy c/noncredibledefence c/keepwriting c/worldbuilding and so on. It is certainly less than Reddit but often quality is substancially higher and is "enough" to keep me entertained.
Also I like that you can actually post something without running into a bazillion deletes, bans and moderator shitshat because your post was two words to short, not NCD enough and so on.
Sure, the C64 community on Lemmy is laughable. So is the ARMA community. I still use REddit for that. Also I often check up stuff on r/hfy and r/NCD but since one week I have been prefering Lemmy for that.
Also my longer posts don't get eaten up any more. God, three weeks ago most posts with 3k an more just got lost without feed back. Nowadays I have even manges posts around 20k without breaking them up. Though the editor is still lacking for longer posts. On Reddit I can copy-paste pretty much anything from Libreoffice into Reddits Editor (which is also pretty lacking but differently lacking). On Lemmy I have to run most text through a little perl script to get them even using correct line breaks perl -pe 's/\n/\n\n/' and different sizes for Headlines are much to few to select from.
Not perfect, not even very good but definitely promising.
Just joined after sync for lemmy has been released to the public. As a sync user since it started a decade ago lemmy already feels more familiar to me than reddit. I don't quite understand exactly how it all works just yet but I can definitely see myself using this over reddit.
Feel free to make an account on another instance like lemm.ee (a general sensible instance) or lemmy.cafe (run by a guy, new) or a country-based instance where people of that country congregate. You might do this to keep your interests or purposes for the accounts separate or in case the lemmy.world server is down (even for a short while), or to potentially access defederated instances and their communities.
Does your username automatically carry over to different instances? Or do you need to create a new account for each?
For now if you want another account, you just make another (with any username you want, I have an account with the same username on lemm.ee). It's possible to port subscriptions and blocked users and communities to a new account using some software. While that is useful, it's not a proper account migration.
However keep in mind you can mostly access most other instances from your home instance. In that case your username (and instance) 'carry over'.
On the off chance lemmy.world has defederated from an instance, and you can't access it, you can join another general, neutral instance like lemm.ee