I’ve been getting to know Tim Berners-Lee’s Project SOLID through their gitter and talking to Melvin Carvalho who is also working with the RemoteStorage.io guys (and with Sir Tim 
). Melvin met @dirvine a while back but is not up to speed on SAFE… yet 
He just showed me this early demo of a decentralised social network which used SOLID and Linked Data to store the user’s data in their own cloud (on SOLID servers). The project is paused but… wow!