I have an old account that I created as a placeholder when Twitter formed but have not signed in for a long time. Assuming that old account still exists maybe I'll give it a whirl to watch the show. There are a lot of rumors about what comes next, including rumors of integrations with a few other platforms.

As for Mastadon, I like the idea and even thought about spinning up a few instances but I really don't do social media beyond HN so I expect even the chirping crickets would bail on me.