I had known Mastodon for quite some time but never used it until lots of people came over there from Twitter (which I had never used) and then I set up my own instance.

And now I’ve also set up my own Lemmy instance, I am still using Reddit aswell, but I hope Lemmy gets enough activity for it to be actually useful (seems to be on a good path).

(Yes, I don’t mix Mastodon and Lemmy, because Lemmy just works so different from most other ActivityPub software, it would just confuse me.)

Also I have used Matrix for quite a long time now.