Once the API is created for this (if there will be one), could Bittorrent sync be used as a backend for a sort of private facebook? I was thinking that when people put their updates into a GUI (or webinterface) the files or changes are put into a folder that then syncs with all the other people in your network using Bittorrent sync. A nice web front-end would make this nice for people used to the facebook look. I would think this would be useful for family type sharing, since having private photos, videos, etc. on Facebook isn't all that great for privacy and person control of your content. Will something like this be possible? If so, this would certainly be a lot easier and less centralized than projects like diaspora.