Twitter will stop users from promoting their presence on rival services, including Facebook, Mastodon, and Nostr, and will remove tweets and accounts that do so (Emma Roth/The Verge)

Emma Roth / The Verge:
Twitter will stop users from promoting their presence on rival services, including Facebook, Mastodon, and Nostr, and will remove tweets and accounts that do so  —  Twitter will no longer allow users to promote their presence on certain social platforms, including Facebook, Instagram, Mastodon, Truth Social, Tribel, Nostr, and Post.