I've set up accounts on three social media sites to replace Twitter.

CoSo is the clear winner but I need to find a way to attract more journalists and researchers to join for it to be an effective replacement.

Post.news is fine for news updates, but it's funded by Mark Andreesen, who isn't all that different from Musk and indeed helped ($) Musk buy Twitter.

Spoutible is problematic harassment-wise and I only set up an account there to prevent someone else from spoofing me.