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
Depends on your Mastodon instance and if it defederated with Threads or not
Try pasting the username of a threads user into the search