Wow, I found Mastodon years and years and years ago back even before the bitcoinhackers server launched, and gave up on it then because there was nobody home. Then I think about 2 years ago we had that thing with the GAB community starting up a federation server, and the rest of mastodon said loudly in unison: "Discommunicate these nazis" so they proved there was censorship there afterall. I haven't looked at them again since. 

Coinosphere

Did you find SN because of Nostr?

Anonomoto

I stopped using the #BirdSite after fElon bought it and moved to Mastodon and I said it here. And then someone here replied to me with just "nostr > mastodon". I have to say at first I thought it was an idiot, LOL, but I looked at Nostr and after a few days I almost stopped using Mastodon too (I toot a little from time to time), and definitely went purple all the way. So, I found Nostr because of SN and Mastodon.