Censorship resistance, is the other benefit of blockchain social networks. However, this is a double edged sword if it isn't done correctly. Because obviously, if you store user generated content directly on the blockchain, it cannot be removed from there and some dark web content may end up on there. No problem, all you do is you use the blockchain as an index to points to content that is actually stored on a peer-to-peer file sharing network (using distributed hash tables/IPFS). This would actually make it easier for authorities to track down terrorists, peado's etc, while also making it harder to remove things that should legitimately be censorship resistant like whistle-bowing (Wikileaks etc). This includes ethical hackers. Basically the digital community will start to look after themselves and do it better than it can be done by entrusting a third party intermediary. Steemit/Hive is one blockchain social network that seems fantastic, But I am concerned about it seems to be storing user generated content directly on the blockchain (although I haven't fully confirmed this). Hyppr seems to be very promising blockchain social network that will be very popular and from what I have seen they also implement the separation between blockchain and user generated content correctly. However, they have too much control of their own network so they will censor content. We need a happy balance in the middle, so I may have to create my own social network platform. Other worthy mentions are: Minds, Bitchute, lbry.tv, dlive, etc.