I just updated the Members Area page with instructions on how to activate ActivityPub and Diaspora, which allows you to interact with people on Mastodon, Misskey, Pixelfed, PeerTube, Lemmy, and many other platforms.
https://hubzilla.monster/page/membership/membersHubzilla is a multi-protocol platform that gives people choices about which networks they connect to and not connect to. If you are logged in, you can click on the links to activate these protocols.
