Starting a test where posts from Threads accounts will be available on Mastodon and other services that use the ActivityPub protocol. Making Threads interoperable will give people more choice over how they interact and it will help content reach more people. I'm pretty optimistic about this.
I have my problems with Meta, but I’m hoping this will help Mastodon grow
I’m counting only monthly active users, for both sides. FediDB lists 1.2M for the Fediverse, your link lists 1.7M of them.