Re: the hosting of topics&#x2F;subreddits in the DHT, I&#x27;ve done quite a lot of research [1] into a very innovative yet not well known P2P publish-subscribe network design [2] from some Norweigan computer scientists that removes the role of hosting for nodes not interested in a topic, even designing a decentralised microblogging platform on top of it [3].<p>It&#x27;s called PolderCast, and the way it works is that it models subscribers of a topic as a ring, and then uses 3 different overlay networking modules to efficiently constructing the network (a basic gossip one, one that finds nodes with intersecting interests, and then a final one which constructs the neighbours for a node in the topic ring). Thus, only subscribers of a topic are responsible for hosting, in contrast to a DHT where every node would be (even for questionable content that they may not agree with).<p>[1] <a href="http:&#x2F;&#x2F;liamz.co&#x2F;wp-content&#x2F;uploads&#x2F;2015&#x2F;03&#x2F;Computer-Science-Extended-Essay_Liam-Edwards-Playne.pdf" rel="nofollow">http:&#x2F;&#x2F;liamz.co&#x2F;wp-content&#x2F;uploads&#x2F;2015&#x2F;03&#x2F;Computer-Science-...</a><p>[2] <a href="http:&#x2F;&#x2F;acropolis.cs.vu.nl&#x2F;~spyros&#x2F;www&#x2F;papers&#x2F;PolderCast.pdf" rel="nofollow">http:&#x2F;&#x2F;acropolis.cs.vu.nl&#x2F;~spyros&#x2F;www&#x2F;papers&#x2F;PolderCast.pdf</a><p>[3] BitWeav <a href="http:&#x2F;&#x2F;liamz.co&#x2F;wp-content&#x2F;uploads&#x2F;2015&#x2F;03&#x2F;whitepaper.pdf" rel="nofollow">http:&#x2F;&#x2F;liamz.co&#x2F;wp-content&#x2F;uploads&#x2F;2015&#x2F;03&#x2F;whitepaper.pdf</a>