Between playing around on mastodon, and my family's own/private gnu social instance, and matrix.org, i honestly don't know which to give my attention...In any case, it is exciting that there are a few efforts underway that have to do with decentralized communication. Funny how email - and its decentralized-ness - still lives on. I grant you that other platforms might get their attention (sometimes short-lived), but decentralized platforms - yes like email - just don't die...and i think that's great because among other reasons decentralization fends off death.
Kudos to the Mastodon team!