My Instagram account won't let me follow anybody for some reason (cites protection of users or somesuch). I never use it anyway. I've requested a data download and will delete it imminently, as it is completely useless to me.
May as well avoid them accidentally creating me a Threads account I don't want.
Friendica, apparently. I've never used it.
You can interact on both platforms using one account, but the best experience is to have an account on each - Lemmy communities don't work very well on Mastodon, and Mastodon users can't be followed from Lemmy. Kbin is the middle ground which can do both.
Another "Brexit benefit"!
feddit.uk is an active one, if you don't have any luck at the café.
Go to the settings cog, and toggle the media preview on (or compare the pane in both browsers to see what is different)
Yes, 500 errors seem to have increased again, struggling to even get thread views (turning off magazine icons, avatars, and sometimes thumbnails helps), but a lot of posts themselves aren't displaying on their own. This one doesn't work at all:
https://fedia.io/m/fediverse@lemmy.world/t/66964/If-Meta-federates-with-the-Fediverse-do-my-Mastodon-posts
Some others I can eventually get to display just by toggling thumbnails off and on several times. That definitely feels like a #kbin bug rather than anything to do with #Fedia.
[edit] This is an odd one, I managed to get it to display by toggling thumbnails on and off, then after I've toggled them again it now appears to be permanently broken: https://fedia.io/m/fediverse@lemmy.world/t/66849/Federation-Lag-o-meter
I assume you didn't specifically mention me with the fedia.io domain... yet here I am. So that appears to be a bug as Kbin notified me.
I've not tried putting spaces in, might be an interesting experiment.
Companies can host Mastodon (or Lemmy or whatever) on their own domain. That way they have control over the instance and it implicitly verifies their account as official. Raspberry Pi already do this (raspberrypi.social).