Twitter and Mastodon content
Week 2019-11-25/29: XSF online+offline
Week 2019-12-02/06: XMPP advantages
Wed 2019-12-04: push notifs?
Push notifications, or third party infra to send data from server to clients/apps.
https://xmpp.org/extensions/xep-0357.html
Thu 2019-12-05: compliance?
https://xmpp.org/extensions/xep-0423.html