The ActivityPub Conference of 2019 was held in Prague. This is about a talk about how we can keep SPAM and unwanted messages off of our platforms in the Fediverse. https://www.zwilnik.com/?page_id=1089
Links:
https://redaktor.me/apconf/
https://archive.org/details/apconf-talks/Talk4_Serge_compressed.mov
https://gitlab.com/spritely/ocappub
https://www.zwilnik.com/spritely/ocappub/master/*How%20to%20build%20it
https://en.wikipedia.org/wiki/Fediverse
https://www.zwilnik.com/?page_id=1089