Over the past year, my GNU Social timeline has gone almost completely silent; it seems that many people have moved to Mastodon and maybe those instances have stopped federating.
Further, GNU Social development has been stalled for a long time.
So this seems like an inevitable decision to give Mastodon a try. I'll start by following people and will post both on here and GNU Social initially. See https://social.mikegerwitz.com.
@mikegerwitz Unfortunately I believe Mastodon dropped OStatus support. I'm not sure why they did that before GNU Social would have AP support.
Mike Gerwitz's personal Mastodon instance