Flickr CEO Don MacAskill today began to actively poll users about whether or not they'd like to see Flickr support ActivityPub. If it moved forward with this plan, Flickr would be the latest larger company to commit to joining the "fediverse."
Tumblr will add support for ActivityPub, the open, decentralized social networking protocol that today is powering social networking software like Twitter alternative Mastodon, the Instagram-like Pixelfed, video streaming service PeerTube, and others.