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Re:ActivityPub: decentralized social networking protocol by fauigerzigerk on Wednesday January 24, 2018 @01:58PM (#16225307)
BitTorrent only works well (i.e in a true peer to peer fashion) if many people are serving up the same files so that some sources are always online. Outside of piracy that is rarely the case.
Re:ActivityPub: decentralized social networking protocol by icebraining on Thursday January 25, 2018 @06:56AM (#16230260)
People will serve whatever the software wants; serving only want the user explicitly selected is just an option.

For example, in Freenode you don't control what gets downloaded and served (which also helps to hide what you're fetching on purpose).